Examkin

Logical Reasoning

666 soru

Tüm türler666Çoktan seçmeli343Çoklu seçim54Doğru / Yanlış70Eşleştirme166Sıralama18Boşluk doldurma10Kısa cevap5
Soru 141Soru →

Archaeologist: Any ceramic vessel that is fired at temperatures exceeding 900 degrees Celsius develops a distinct vitrification pattern visible under a microscope. Microscopic examination of the pottery sherds recently excavated at the coastal settlement revealed this exact vitrification pattern. Therefore, the ancient artisans who crafted these sherds must have fired them at temperatures exceeding 900 degrees Celsius.

Which one of the following most accurately describes a flaw in the archaeologist's reasoning?

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Cevap: It treats a condition that guarantees the presence of a physical characteristic as though it were the only way that characteristic could arise.

Cevap

The argument treats a condition that guarantees the presence of a physical characteristic as though it were the only way that characteristic could arise.
The archaeologist establishes that firing pottery above 900 degrees Celsius is sufficient to create the vitrification pattern. However, the presence of the vitrification pattern does not logically prove that the pottery was fired at that high temperature, because other processes (such as different mineral compositions or prolonged low-heat exposure) could potentially produce the same pattern. By assuming that firing above 900 degrees Celsius is the only way to achieve this pattern, the argument confuses a sufficient condition with a necessary one.

Adım Adım Çözüm

1
Identify the premises and the main conclusion of the argument.
Premise 1: Firing above 900°C results in a distinct vitrification pattern. Premise 2: The excavated pottery exhibits this vitrification pattern. Conclusion: The pottery was fired at temperatures exceeding 900°C.
Deconstructing the argument into its core components is essential for isolating the logical gap between the evidence and the claim.
2
Analyze the conditional relationship established by the premises.
The first premise states a sufficient condition: Firing above 900°C guarantees vitrification. It does not state that firing above 900°C is the ONLY way vitrification can occur.
Distinguishing between sufficient and necessary conditions reveals whether the direction of reasoning is valid.
3
Evaluate the logical transition from the observed evidence to the conclusion.
The archaeologist observes the result (vitrification) and improperly infers that the specific trigger (firing above 900°C) must have occurred, committing a conditional reversal error.
Matching this logical flaw to the answer choices pinpoints the correct assessment.

Anahtar Kavram

Conditional Reversal (Mistaking a Sufficient Condition for a Necessary Condition)
Tahmini Süre:55s
Soru 142Soru →

Match each flawed argument excerpt on the left with the abstract description on the right that most accurately identifies its primary reasoning vulnerability.

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Öğeler

Urban Planner: Every neighborhood association that submitted a grant application requesting municipal bike lane funding was awarded financial support. Because the Riverside District received municipal funding for bike lanes, the Riverside neighborhood association must have submitted a formal grant application.
Agricultural Scientist: Soil plots treated with the experimental bio-fertilizer exhibited a substantial reduction in fungal blight incidence over a three-month trial. Therefore, applying this bio-fertilizer was clearly the direct cause of the blight reduction.
Corporate Counsel: The chief financial officer recommended that our firm divest from overseas supply chains to minimize foreign exchange exposure. However, the financial officer holds personal equity in domestic logistics firms, so we should dismiss this recommendation.
Museum Curator: Every individual antique clock in this horological exhibition functions with flawless mechanical precision. It follows that the entire clock exhibition as an integrated whole is guaranteed to operate indefinitely without experiencing operational failure.

Eşleşmeler

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Cevap

The urban planner excerpt matches the description of treating a sufficient condition as a necessary condition; the agricultural scientist excerpt matches inferring causation from correlation; the corporate counsel excerpt matches directing criticism against the advocate's motives; and the museum curator excerpt matches assuming an attribute of each part applies to the whole.
Each excerpt exhibits a classic argumentation flaw that aligns precisely with its corresponding abstract descriptor: the urban planner confuses sufficiency with necessity; the agricultural scientist infers causation from a co-occurrence without ruling out alternative causes; the corporate counsel dismisses a substantive proposal by citing the proponent's personal financial stake; and the curator commits a composition error by projecting the property of individual clocks onto the collective whole.

Adım Adım Çözüm

1
Isolate the logical jump in each excerpt on the left.
Excerpt 1 confuses necessity and sufficiency; Excerpt 2 presumes causation from an observed decrease; Excerpt 3 attacks the speaker's personal conflict of interest; Excerpt 4 derives a conclusion about a whole exhibition from its parts.
Accurate identification of the underlying reasoning error is required before mapping to formal structural descriptions.
2
Evaluate the abstract descriptions on the right against standard logical flaw categories.
Description 1 defines correlation-to-causation; Description 2 defines conditional reversal (sufficiency/necessity); Description 3 defines the fallacy of composition; Description 4 defines the ad hominem / source fallacy.
Matching each excerpt to its exact structural definition eliminates distractors based on superficial wording.
3
Form the one-to-one correspondence between each excerpt and its corresponding flaw definition.
Left 1 pairs with Right 2; Left 2 pairs with Right 1; Left 3 pairs with Right 4; Left 4 pairs with Right 3.
Each pair correctly matches a concrete logical error with its precise abstract formulation.

Anahtar Kavram

Flaw in the Reasoning: Identifying formal and informal logical fallacies (conditional reversal, correlation vs. causation, source argument, and fallacy of composition).
Tahmini Süre:2m 0s
Soru 143Soru →

For each of the three flawed argumentative excerpts below, evaluate the logical connection between the premises and the conclusion. Which pairings correctly match each argumentative excerpt with the abstract description that most accurately identifies its primary reasoning vulnerability?

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Öğeler

Paleoclimatologist: Extracting an intact core sample from the glacial plateau is necessary to verify the timing of the prehistoric atmospheric shift. Because our drilling expedition successfully extracted a completely intact core sample from the plateau, we have conclusively verified the timing of the atmospheric shift.
City Planner: To revitalize the riverfront district, the municipal council must either approve the proposed commercial rezoning plan or permit the entire waterfront to deteriorate into irreversible economic blight. Because preventing blight is essential, the council must approve the proposed commercial rezoning plan.
Cybersecurity Analyst: The lead developer argued that our payment processing portal has several critical cryptographic vulnerabilities. However, that developer was recently reprimanded for chronic absenteeism and missed project deadlines. Therefore, the payment portal does not contain any vulnerabilities.

Eşleşmeler

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Cevap

The paleoclimatologist's excerpt matches the description of treating a necessary condition as sufficient; the city planner's excerpt matches the description of presenting an unwarranted false dilemma; and the cybersecurity analyst's excerpt matches the description of attacking the proponent's conduct rather than the claim.
Each argument corresponds to a classic LSAT reasoning vulnerability: the paleoclimatologist confuses a necessary condition (intact core) for a sufficient one; the city planner constructs an unwarranted false dilemma between approval and blight; and the cybersecurity analyst engages in an ad hominem attack by dismissing a technical warning based on employee attendance records.

Adım Adım Çözüm

1
Analyze the conditional structure of the paleoclimatologist's argument.
The premise states that an intact core is 'necessary' (Required: Verification → Intact Core). The conclusion claims that having an intact core proves verification (Intact Core → Verification).
This isolates the conditional error of treating a necessary condition as a sufficient one.
2
Examine the scope of alternatives presented in the city planner's argument.
The argument restricts all future possibilities to only two extreme outcomes: commercial rezoning or economic blight.
This identifies a classic false dichotomy (false dilemma) that neglects intermediate urban planning solutions.
3
Evaluate the evidentiary basis used by the cybersecurity analyst to dismiss the security claim.
The analyst rejects the technical assessment solely because the developer has poor work attendance and missed deadlines.
This identifies a source argument (ad hominem) where personal characteristics are improperly substituted for technical evidence.

Anahtar Kavram

Identifying reasoning flaws in argumentative structures
Tahmini Süre:1m 45s
Soru 144Soru →

Each of the following argumentative excerpts exhibits a characteristic vulnerability in its logical reasoning. Match each excerpt with the statement that most accurately characterizes its primary logical flaw.

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Öğeler

Structural Engineer: Every composite beam used in the new municipal arena's cantilevered roof is individually capable of withstanding a magnitude 8.0 seismic tremor without experiencing shear failure. Therefore, the completed cantilevered roof assembly as an integrated structure will certainly withstand a magnitude 8.0 tremor without structural failure.
Agricultural Geneticist: A newly developed cultivar of drought-resistant sorghum will produce commercially viable grain yields in arid topsoil only if the farmer introduces specialized mycorrhizal fungi to support root nutrient absorption. Because this farmer inoculated the entire test field with these mycorrhizal fungi, the sorghum crop is guaranteed to produce commercially viable grain yields despite the drought.
Cybersecurity Policy Analyst: The federal oversight board must either mandate full open-source public disclosure of all encrypted communication algorithms or accept that foreign intelligence agencies will breach critical infrastructure undetected. Mandated disclosure of proprietary encryption algorithms would severely undermine domestic commercial security. Thus, the oversight board has no choice but to resign itself to undetected hostile breaches.
Patent Litigator: The research team at BioMatrix asserts that their proprietary enzymatic process synthesizes industrial biopolymers at twice the speed of traditional chemical catalysts. However, the principal investigators on this team hold substantial equity in BioMatrix and stand to realize millions of dollars in capital gains if the patent is granted. Hence, the experimental findings regarding the catalytic synthesis speed must be fraudulent or invalid.

Eşleşmeler

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Cevap

The structural engineering argument matches the part-to-whole composition flaw; the agricultural genetics argument matches the confusion of a necessary condition for a sufficient one; the cybersecurity argument matches the false dilemma fallacy; and the patent litigation argument matches the source-bias / ad hominem fallacy.
Each argumentative excerpt maps directly to a classic formal or informal reasoning vulnerability: (1) concluding that an entire assembly will withstand seismic shock because each beam does commits the composition/part-to-whole error; (2) concluding that providing a necessary fungal inoculant guarantees a commercial harvest commits the error of treating a necessary condition as sufficient; (3) forcing an artificial choice between full algorithmic disclosure and inevitable hostile compromise commits a false dichotomy; and (4) discarding experimental findings due to researchers' financial equity stakes commits an ad hominem / source fallacy.

Adım Adım Çözüm

1
Analyze the structural engineering excerpt for structural flaws.
Identified that the premise concerns individual composite beams, whereas the conclusion asserts a property of the completed integrated roof assembly. This is an invalid part-to-whole inference (fallacy of composition).
Properties of individual parts do not necessarily transfer to the complex emergent behavior of the assembled whole.
2
Evaluate the conditional relationship in the agricultural genetics excerpt.
The premise establishes: Viable Yield → Mycorrhizal Fungi. The conclusion infers: Mycorrhizal Fungi → Viable Yield. This commits a conditional reversal / necessary versus sufficient condition confusion.
Satisfying a mandatory prerequisite does not ensure the occurrence of the final result.
3
Examine the scope of alternatives in the cybersecurity analyst's argument.
The argument posits an exhaustive 'either/or' choice between full disclosure and undetected breaches without demonstrating that no middle ground or third alternative exists.
Eliminating one extreme option does not validate the opposite extreme when the initial dichotomy is false.
4
Assess the evidential basis in the patent litigator's argument.
The conclusion rejects the factual truth of experimental findings purely by pointing out the researchers' vested financial interest, rather than critiquing the empirical evidence.
A speaker's motive or conflict of interest does not logically disprove the veracity of their substantive factual findings.

Anahtar Kavram

Flaw in the Reasoning: Structural, Conditional, Dichotomous, and Source Fallacies
Tahmini Süre:2m 30s
Soru 145Soru →

Match each logical argument on the left with the implicit necessary assumption on the right upon which its conclusion depends.

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Öğeler

Economist: Implementing automated inventory scanning across regional fulfillment centers reduces human clerical logging errors by ninety percent. Therefore, logistics firms that adopt automated scanning across all their facilities will experience a net decrease in overall operating expenditures.
Epigrapher: The commemorative inscription recently excavated at a lowland maritime settlement features specialized phonetic glyphs documented exclusively in highland trade records from the late Bronze Age. Consequently, highland merchants must have maintained direct administrative contact with lowland coastal settlements during that era.
Planetary Scientist: Mineral analysis of strata within the northern polar basin of Mars reveals alternating laminations of perchlorate salts and hydrated clays, a sequence that precipitates only in sustained seasonal meltwater. Because no non-aqueous process produces this configuration, liquid water must have existed on the Martian surface after the close of the Noachian epoch.

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Cevap

Each argument matches with the unstated presupposition required for its conclusion to stand under the Negation Test: the logistics argument requires that automation costs do not eclipse error-reduction savings; the epigraphical argument requires that the script was not transmitted solely through third parties; and the planetary science argument requires that the sampled mineral layers were deposited during the post-Noachian epoch.
For each pair, the right-hand statement represents a foundational requirement without which the author's inference fails. For the automated scanning argument, if implementation costs equal or outweigh clerical savings, net operating costs will not decrease. For the epigraphic argument, if intermediaries exclusively carried the glyphs, direct administrative contact is unproven. For the planetary argument, if the mineral layers date to the Noachian epoch or earlier, the presence of meltwater provides no evidence for water existing after that epoch.

Adım Adım Çözüm

1
Isolate the premises and conclusion for each argument on the left.
Identified the primary claim and inferential leap for the logistics, epigraphy, and planetary science arguments.
Necessary assumptions must specifically bridge the logical gap between stated premises and the conclusion.
2
Apply the Negation Test to candidate assumptions on the right.
Negating each matched assumption directly disproves or fatally undermines the corresponding argument's conclusion.
A necessary assumption is one whose falsity renders the argument logically invalid.
3
Pair each argument with its indispensable foundation.
All three arguments are matched to their unique necessary assumptions.
Completes the matching evaluation without conflating sufficient conditions with necessary ones.

Anahtar Kavram

Necessary Assumption identification via the Negation Test
Soru 146Soru →

If a manuscript contains original historical documents, it is placed in the rare archives collection. This manuscript has been placed in the rare archives collection; therefore, it must contain original historical documents.

The flawed pattern of reasoning in the argument above is most similar to that in which of the following?

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Cevap: If a company produces organic juice, it must obtain an agricultural certification. FreshGrove obtained an agricultural certification, so it must produce organic juice.

Cevap

The argument concluding that FreshGrove must produce organic juice because it obtained an agricultural certification commits the identical flaw of affirming the consequent (mistaking a necessary condition for a sufficient condition).
The argument concluding that FreshGrove produces organic juice commits the identical error of affirming the consequent. The initial conditional statement establishes that producing organic juice requires obtaining an agricultural certification (Organic Juice -> Certification). The argument then affirms that the certification was obtained and erroneously concludes that the company must produce organic juice.

Adım Adım Çözüm

1
Analyze and diagram the conditional structure of the stimulus.
Premise 1: Contains original documents -> Placed in rare archives. Premise 2: Placed in rare archives. Conclusion: Contains original documents.
Diagramming reveals the formal defect: affirming the necessary condition to conclude the sufficient condition must have occurred.
2
Identify the specific reasoning flaw.
The argument treats being placed in rare archives as a guarantee of containing original documents, committing a Mistaken Reversal (affirming the consequent).
Parallel flaw items require finding an answer choice with the exact same directional error.
3
Evaluate the choices to locate the structurally isomorphic conditional error.
The argument regarding FreshGrove diagrams as: Produces organic juice -> Agricultural certification. FreshGrove has certification; therefore, FreshGrove produces organic juice.
This choice exhibits the exact same premise-to-conclusion structure and conditional defect as the stimulus.

Anahtar Kavram

Parallel Flaw: Affirming the Consequent / Mistaken Reversal
Tahmini Süre:1m 0s
Soru 147Soru →

Under Mediterranean maritime customary tribunals applying the Lex Rhodia doctrine, a shipmaster was permitted to enforce general average indemnification against cargo owners for emergency jettison of cargo during storms only if the vessel had passed an official seaworthiness inspection prior to departure and a majority of onboard merchant supercargoes voted to ratify the jettison. Furthermore, no tribunal would enforce an indemnification claim if the vessel carried unmanifested contraband goods during the voyage. Following a storm during an 842 CE voyage from Amalfi to Alexandria, the vessel Galatea lost cargo due to emergency jettison, and the maritime tribunal subsequently ordered the cargo owners to pay general average indemnification to the shipmaster.

Statement: Based on the facts established above, the Galatea was not carrying unmanifested contraband goods during the voyage, and a majority of the onboard merchant supercargoes ratified the jettison.

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Cevap: True

Cevap

True
The statement must be true because the tribunal's enforcement of the indemnification claim logically requires the satisfaction of all mandatory statutory conditions established in the premises: the absence of unmanifested contraband and the ratification by a majority of the supercargoes.

Adım Adım Çözüm

1
Formalize the conditional relationships stated in the stimulus.
Enforce Indemnification implies Seaworthiness Inspection, Majority Supercargo Ratification, and No Unmanifested Contraband.
The phrase 'only if' introduces necessary conditions, while the rule that 'no tribunal would enforce... if contraband was carried' establishes that carrying contraband is sufficient to preclude enforcement (Contraband implies No Indemnification; by contrapositive, Indemnification implies No Contraband).
2
Identify the verified factual outcome from the historical case.
The maritime tribunal formally ordered the cargo owners to pay general average indemnification.
This establishes that the sufficient condition for all necessary prerequisites has occurred.
3
Deduce the truth value of the compound statement.
Both conjuncts—that the vessel carried no unmanifested contraband and that a majority of supercargoes ratified the jettison—are logically guaranteed.
Because the necessary conditions must hold whenever the outcome is realized, the compound statement must be true.

Anahtar Kavram

Deductive Conditional Inference and Necessary Condition Fulfillment
Soru 148Soru →

Each of the following arguments contains a serious logical vulnerability. Match each flawed argument with the abstract description that most accurately identifies its primary reasoning flaw.

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Öğeler

Archaeologist: Every individual obsidian blade recovered from the highland excavation site was fashioned using rudimentary direct percussion techniques. Therefore, the architectural stone masonry across the settlement as a whole must have been built using primitive construction methods.
Bioethicist: Independent institutional oversight is an indispensable prerequisite for ensuring that a clinical drug trial maintains ethical integrity. Hence, any pharmaceutical trial that successfully secures such institutional oversight is thereby guaranteed to maintain impeccable ethical standards.
Economist: Financial decisions are defined as economically rational only if they maximize anticipated monetary returns. Because the venture founder chose to distribute surplus company equity among entry-level staff rather than reinvesting for maximum monetary yield, the founder's cognitive faculties must be fundamentally irrational.
Forensic Analyst: The audit proved conclusively that the suspect did not hold the master encryption credentials necessary to bypass the corporate database directly. It follows that the unauthorized exfiltration of proprietary records could only have been executed by an external network intruder.

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Cevap

Match the archaeologist's argument with the description of the part-to-whole composition flaw; match the bioethicist's argument with the description of confusing a necessary condition for a sufficient one; match the economist's argument with the description of equivocation between technical and general senses of a term; match the forensic analyst's argument with the description of assuming only two alternatives exist.
Each argument corresponds precisely to an established logical fallacy archetype: the archaeologist infers a property of a whole from properties of its parts; the bioethicist mistakes a necessary condition for a sufficient one; the economist trades on two distinct meanings of rationality; and the forensic analyst relies on a false dichotomy by failing to exhaust all alternative explanations.

Adım Adım Çözüm

1
Isolate the premise and conclusion of the archaeologist's argument to evaluate structural relationships.
The premises describe individual obsidian tools, while the conclusion characterizes the settlement's collective stone masonry as a whole, exhibiting a classic part-to-whole (composition) fallacy.
Properties of individual components cannot be automatically transferred to the aggregate whole without independent justification.
2
Analyze the formal conditional structure in the bioethicist's statement.
The bioethicist identifies oversight as an 'indispensable prerequisite' (necessary condition) but concludes that having oversight 'guarantees' the result (sufficient condition).
Satisfying a necessary condition does not provide complete sufficiency for the desired outcome.
3
Track semantic consistency in the economist's use of 'rational'.
The premise defines 'economically rational' purely through monetary maximization, while the conclusion claims the founder's cognitive faculties are 'fundamentally irrational' in a psychological sense.
Shifting the operative meaning of a core concept between the premises and conclusion invalidates deductive validity.
4
Examine the exhaustive scope of possibilities in the forensic analyst's deduction.
The analyst rules out only the suspect's direct master credentials and prematurely jumps to an external intruder, presenting an unjustified false dilemma.
Ruling out one single hypothesis does not prove a favoured alternative when intermediate or distinct possibilities remain unaddressed.

Anahtar Kavram

Flaw in the Reasoning Identification
Tahmini Süre:2m 0s
Soru 149Soru →

Each of the following argumentative excerpts exhibits a distinct reasoning flaw. Match each argument on the left with the abstract description on the right that most accurately characterizes its primary logical error.

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Öğeler

Agronomist: Every individual grain silo inspected in the regional agricultural cooperative demonstrated flawless structural pest insulation this season. Therefore, the cooperative's entire post-harvest storage and distribution network as a whole is completely impervious to pest contamination.
Epidemiologist: A municipal water purification protocol is fully effective only if the incidence of waterborne gastrointestinal illnesses in the district declines by at least 75 percent. Because clinical records indicate an 80 percent decline in such illnesses this year, the purification protocol was definitively fully effective.
Literary Critic: The newly translated epic poem is an extraordinary work of genuine literary genius. This is evident because only pieces possessing profound creative mastery can be deemed works of genius, and this translation unmistakably exemplifies profound creative mastery.
Policy Analyst: The regional transit authority must either authorize a substantial fare increase for commuter rail services or permanently eliminate all off-peak transit routes. Because eliminating off-peak transit routes is unacceptable to the public, the transit authority has no choice but to authorize the fare increase.

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Cevap

The argument concerning grain silos matches the composition flaw (inferring whole from parts); the argument concerning water purification matches the confusion of necessity and sufficiency; the argument concerning the epic poem matches circular reasoning; and the argument concerning commuter rail matches the false dilemma.
Each excerpt contains a classic, distinct reasoning error: the agronomist commits an error of composition by attributing an attribute of parts to the collective whole; the epidemiologist confuses a necessary condition with a sufficient condition; the literary critic relies on circular reasoning by using a premise logically equivalent to the conclusion; and the policy analyst assumes a false dilemma by treating two options as the only possible outcomes.

Adım Adım Çözüm

1
Isolate the premise and conclusion of each argumentative excerpt to identify its structural inferential leap.
Excerpt 1 infers a network-wide property from individual silos; Excerpt 2 derives a conclusion from a necessary condition; Excerpt 3 uses circular restatement; Excerpt 4 forces a binary choice.
Accurate flaw identification requires pinpointing the exact gap between premises and conclusion in each argument.
2
Map each argument's specific vulnerability to the corresponding abstract logical fallacy description.
Excerpt 1 corresponds to part-to-whole composition; Excerpt 2 corresponds to conditional reversal (necessary vs. sufficient); Excerpt 3 corresponds to begging the question; Excerpt 4 corresponds to unwarranted restriction of alternatives.
Standardized flaw analysis relies on matching contextual reasoning patterns to formal and informal fallacy categories.
3
Confirm that all pairs are uniquely and unambiguously aligned with no overlapping definitions.
Each of the four pairs represents a distinct, mutually exclusive fallacy archetype.
Ensures complete structural precision across the entire matching set.

Anahtar Kavram

Identifying Formal and Informal Reasoning Flaws
Tahmini Süre:2m 30s
Soru 150Soru →

For each paradoxical phenomenon described below, select the underlying factual finding that most effectively resolves the apparent discrepancy.

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Öğeler

A municipal rail authority installed full-height automated security gates at all downtown terminal stations, reducing documented turnstile-jumping by over 80 percent. However, over the subsequent quarter, total fare revenue collected across the metropolitan transit network dropped significantly despite overall network ridership remaining constant.
A commercial air freight carrier installed high-precision acoustic vibration sensors on all aircraft to detect micro-fractures in hydraulic line couplings well before failure. Although the sensors operated without technical error, the fleet's incidence of unscheduled in-flight hydraulic shutdowns increased during the following operational year.
In a montane valley, male finches with ultraviolet-reflective crown feathers have historically experienced greater predation from diurnal raptors than dull-crowned males. When an invasive population of predatory raptors established itself in the valley, the proportion of adult male finches displaying ultraviolet-reflective crowns rose significantly over successive generations.

Eşleşmeler

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Cevap

The municipal rail scenario matches the displacement to unenforced peripheral stations; the air freight sensor scenario matches the diversion of technician attention away from routine secondary valve inspections; and the montane finch plumage scenario matches the raptor suppression of nest-predating squirrels combined with crown-mediated nest competition.
Each correct match supplies an unstated intervening mechanism that harmonizes the conflicting trends: spatial displacement in transit pricing models, maintenance resource reallocation in aviation engineering, and multi-trophic ecological cascades in evolutionary selection pressure.

Adım Adım Çözüm

1
Isolate the core paradox in each scenario by identifying the two mutually conflicting facts.
Scenario 1 pairs decreased turnstile jumping with lower total fare revenue; Scenario 2 pairs advanced fracture detection with higher in-flight failures; Scenario 3 pairs increased predator presence with an increase in conspicuous, targeted plumage.
Resolving an apparent paradox requires understanding precisely what tension needs bridging without contradicting either premise.
2
Evaluate potential causal mechanisms that permit both facts in each pair to exist simultaneously.
Revenue loss stems from displacement to higher-value unmonitored zones; sensor-induced failure stems from maintenance bottlenecking; plumage proliferation stems from countervailing reproductive advantages via predator-mediated ecological cascades.
An effective resolution introduces an external factor that explains the mechanism connecting the unexpected outcome to the initial intervention.
3
Pair each scenario with its corresponding resolving mechanism and verify that no premises are denied.
Each scenario is uniquely paired with an explanation that addresses both sides of the discrepancy.
A valid resolution must account for the full scope of both facts rather than only addressing one side or undermining the established facts.

Anahtar Kavram

Resolve the Paradox: Identifying an auxiliary causal factor that reconciles two seemingly incompatible factual premises without rejecting either premise.
Soru 151Soru →

Consider the reasoning errors exhibited across various disciplinary research summaries. Which abstract flaw description corresponds to the primary logical error committed in each argument?

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Öğeler

Marine Biologist: Deep-sea coral colonies flourish exclusively in benthic zones where hydrothermal vents maintain water alkalinity within a narrow pH band. Submersible probes recently confirmed that the abyssal sector of the Mariana Ridge maintains water alkalinity precisely within this specified pH band. Therefore, healthy deep-sea coral colonies will inevitably flourish throughout this ridge sector.
Econometrician: A multi-decade survey of coastal municipalities revealed that towns adopting municipal carbon taxes consistently recorded higher rates of commercial solar roof installations in the subsequent five years than towns that did not. Thus, the implementation of municipal carbon taxes directly caused local businesses to adopt solar roofing.
Materials Physicist: Every individual superconducting filament incorporated into the newly synthesized composite cable exhibits negligible magnetic hysteresis below critical temperatures. Because each discrete component displays this negligible magnetic hysteresis, the assembled composite transmission cable as a whole will necessarily display negligible magnetic hysteresis.
Archival Scholar: Historians have demonstrated that classical treaties possess enduring cultural value only if their textual contents remain authentic. The newly recovered parchment is indisputably an authentic physical artifact preserved from the fifth century. Consequently, this document must possess genuine cultural value.

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Cevap

The marine biology argument pairs with the necessary-versus-sufficient confusion; the econometrics argument pairs with the correlation-to-causation error; the materials physics argument pairs with the part-to-whole composition fallacy; and the archival scholarship argument pairs with the equivocal shift in term meaning.
Each passage illustrates a textbook informal or formal logical fallacy. The marine biology passage confuses necessity with sufficiency; the econometrics passage confuses correlation with direct causation; the materials physics passage commits a fallacy of composition from parts to whole; and the archival passage commits an equivocation fallacy across differing senses of authenticity.

Adım Adım Çözüm

1
Analyze the marine biology argument for conditional logic errors.
The phrase 'flourish exclusively in' introduces a necessary condition (alkalinity). The premise establishes that the condition is met, and the conclusion improperly infers that flourishing will happen, committing a conditional reversal.
Satisfying a necessary condition does not ensure that an outcome will occur.
2
Analyze the econometrics argument for causal reasoning errors.
The argument observes an empirical co-occurrence between carbon tax adoption and solar installation rates, then directly asserts that one caused the other.
Correlation alone is insufficient to demonstrate causation because third variables or reverse causation could account for the observed pattern.
3
Analyze the materials physics argument for compositional errors.
The argument moves from the properties of 'every individual superconducting filament' to the property of the 'assembled composite transmission cable as a whole.'
Properties of individual parts do not automatically aggregate into properties of the whole system.
4
Analyze the archival scholarship argument for semantic ambiguity.
The term 'authentic' is used in two different contexts: first to denote historically reliable and uncorrupted textual content, and second to denote a genuine antique physical medium.
An argument is invalid when its logical progression relies on shifting definitions of a central term.

Anahtar Kavram

Flaw in the Reasoning
Tahmini Süre:1m 45s
Soru 152Soru →

The following arguments each rely on unstated assumptions to establish a causal conclusion. Match each argument with the evidentiary finding that most effectively strengthens its central conclusion.

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Öğeler

An ecologist argues that a mid-sixth-century drought caused a documented spike in catastrophic wildfires, relying on tree-ring data showing low precipitation and concurrent sediment charcoal deposits.
A behavioral economist concludes that symbolic achievement motives alone drove an 18% shift to off-peak subway travel, based on a trial using an app with digital badges and milestone points but no monetary incentives.
A botanist argues that betalain pigment accumulation in desert succulents functions primarily as a physiological shield against ultraviolet radiation damage, noting that pigments only form under intense UV exposure.

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Cevap

Match the ecologist's wildfire argument with the estuarine sediment finding showing charcoal spikes restricted to drought decades; match the behavioral economist's transit argument with the control trial showing no shift from an information-only app; and match the botanist's pigment argument with the mutant succulent finding showing cellular DNA damage in the absence of betalain.
Each correct match directly resolves the unique causal vulnerability of the paired argument. The ecologist's argument is strengthened by estuarine data that rules out continuous anthropogenic fire as a confounding factor; the transit study is strengthened by a control group showing information alone was insufficient without gamification; and the botanical claim is strengthened by demonstrating that eliminating the pigment results in UV-induced DNA damage.

Adım Adım Çözüm

1
Analyze the reasoning structure and identify the central vulnerability in the ecologist's wildfire argument.
The ecologist infers that drought caused ancient wildfires based solely on temporal coincidence, leaving open the possibility that human land management or independent fire sources caused the charcoal spikes.
Strengthening a causal conclusion requires ruling out alternative explanations or demonstrating consistent covariation between the purported cause and the effect.
2
Analyze the reasoning structure and identify the central vulnerability in the behavioral economist's transit argument.
The economist assumes that symbolic gamification caused the off-peak shift, failing to control for whether the app's underlying scheduling and timing information was the true factor enabling the commuters to reschedule.
A valid strengthener must isolate the causal variable by demonstrating that the effect disappears when the gamification incentive is removed while other features remain constant.
3
Analyze the reasoning structure and identify the central vulnerability in the botanist's pigment argument.
The botanist infers that betalain acts as a protective UV shield because it appears under UV exposure, leaving open whether the pigment is merely an unprotective stress byproduct.
Strengthening requires establishing a direct functional mechanism linking the absence of the substance to the specific physiological harm it is hypothesized to prevent.
4
Match each argument to the finding that directly resolves its specific logical gap.
The wildfire argument matches the estuarine sediment data (ruling out non-drought human burning), the transit argument matches the information-only control group (isolating the badge incentives), and the succulent argument matches the DNA degradation in mutant strains (confirming the protective mechanism of betalain).
Each correct pairing provides the targeted empirical support needed to substantiate the specific unstated causal assumption.

Anahtar Kavram

Identifying unstated causal assumptions and pairing them with evidentiary findings that eliminate alternative explanations or isolate causal variables.
Soru 153Soru →

Each passage below presents an academic argument that relies on an unstated foundational premise. Match each argument with the underlying necessary assumption on which its conclusion depends.

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Öğeler

Marine Biology: Deep-sea anglerfish species possess glowing lures populated by bioluminescent bacteria. Because newly hatched larvae sampled in the upper surface waters show no traces of these bacteria in their nascent lure tissue, adult anglerfish must acquire these bacterial symbionts directly from ambient seawater after descending to bathypelagic depths.
Urban Climatology: A municipal department replaced dark asphalt with high-albedo reflective pavement to lower street surface temperatures. Midday ground-level sensors recorded an average pavement temperature reduction of 4°C. Therefore, installing high-albedo pavement across all streets will substantially reduce the overall heat stress experienced by pedestrians walking on them.
Cognitive Linguistics: An isolated mountain community speaks an indigenous language that uses vertical elevation terms (uphill/downhill) to express temporal relationships (past/future). Because the speakers traverse steep mountain slopes every day, their local topography must be the primary cognitive source that gave rise to their conceptual model of time.

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Cevap

The marine biology argument pairs with the assumption excluding dormant surface symbionts; the urban climatology argument pairs with the assumption excluding increased upward radiant heat on pedestrian bodies; and the cognitive linguistics argument pairs with the assumption excluding ancestral linguistic inheritance prior to mountain settlement.
For each pairing, the matched statement serves as an indispensable foundational premise. In the marine biology argument, ruling out undetectable dormant surface bacteria is essential to deduce that acquisition must occur at depth. In the urban climatology argument, ruling out increased reflected heat absorption by pedestrians is required to conclude that cooler ground translates to lower human thermal stress. In the linguistics argument, ruling out pre-existing ancestral inheritance is required to attribute the metaphor's origin to local terrain.

Adım Adım Çözüm

1
Isolate the conclusion and supporting evidence for each argument passage.
Identified the core inferential leap in each domain: larval lure absence to deep-sea acquisition; pavement surface cooling to pedestrian heat stress relief; current topography to historical cognitive origin.
A necessary assumption must bridge a logical gap or defend the argument against a potential alternative explanation.
2
Apply the Negation Test to candidate assumptions for each argument.
Confirmed that negating each matched statement (e.g., bacteria were dormant at the surface; reflected radiation heats pedestrians; linguistic feature was inherited from lowland ancestors) directly invalidates the author's stated conclusion.
If the negation of a statement does not fatally undermine the conclusion, that statement is not a strictly necessary assumption.
3
Match each argument uniquely to its logically required unstated premise.
Each academic passage is matched with its defender assumption.
Ensures full 1-to-1 correspondence without logical ambiguity or mismatch.

Anahtar Kavram

Necessary Assumption identification via the Negation Technique
Tahmini Süre:2m 0s
Soru 154Soru →

Each scenario below describes an apparent discrepancy between an expected outcome and an observed result. Pair each scenario with the factual explanation that successfully accounts for both observations.

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Öğeler

A municipal water authority introduced generous financial rebates for installing high-efficiency drip irrigation, yet total residential water consumption during dry summer months increased across participating households.
A state highway department installed automated speed-enforcement cameras along a dangerous highway corridor, which successfully decreased vehicle speeding but led to a notable rise in total multi-vehicle collisions.
Archaeological excavations at a desert trading post revealed a marked increase in large-game animal bone refuse during an extended historical drought when regional wildlife populations experienced severe declines.

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Cevap

The water rebate scenario pairs with garden expansion offsetting per-unit savings; the speed camera scenario pairs with sudden driver braking causing rear-end collisions; and the desert post game-bone scenario pairs with wildlife concentrating around local perennial springs.
Each correct pairing supplies an unstated factual mechanism that resolves the discrepancy without denying either established premise: the irrigation scenario is resolved by behavioral expansion of garden beds; the camera scenario is resolved by sudden driver braking creating rear-end hazards; and the archaeological hunting scenario is resolved by the spatial clustering of prey around surviving water sources.

Adım Adım Çözüm

1
Analyze each scenario on the left to identify the two conflicting observations.
Identified the core discrepancies: (1) higher water use despite efficient equipment, (2) more collisions despite reduced speeding, and (3) more game hunted despite lower regional game populations.
Resolving a paradox requires isolating both factual premises so that neither is contradicted.
2
Evaluate the causal mechanisms on the right to find propositions that allow both premises in a given scenario to be simultaneously true.
Matched rebound behavior (expansion of garden size) to the irrigation paradox; matched sudden driver braking to the highway camera collision paradox; and matched localized prey clustering to the desert hunting paradox.
A valid resolution provides an auxiliary fact that bridges the gap between the unexpected outcome and the baseline fact without denying either.
3
Confirm that each match establishes a unique, non-overlapping resolution for all three pairs.
Each scenario on the left pairs unambiguously with exactly one underlying explanation on the right.
Ensures that all pairs form a complete, consistent one-to-one mapping.

Anahtar Kavram

Reconciling apparent discrepancies by identifying an auxiliary causal factor that allows both stated premises to coexist without contradiction.
Tahmini Süre:1m 30s
Soru 155Soru →

Analyze the following four logical arguments drawn from various academic disciplines. Identify the unstated premise strictly required for each argument's conclusion to follow logically, and pair each argument with its corresponding necessary assumption.

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Öğeler

In a repeated prisoner’s dilemma, actors adopting a responsive reciprocating strategy establish mutual cooperation and maximize long-term gains. Consequently, corporations in unregulated competitive markets will inevitably abandon predatory pricing tactics in favor of stable, mutually beneficial price-fixing cartels.
Bilingual children demonstrate superior executive function on task-switching assessments compared to monolingual peers. Since executive function is governed by the prefrontal cortex, mandating second-language immersion in early education will demonstrably accelerate the physical maturation of preschoolers' prefrontal cortices.
Fossilized remains of the Cretaceous theropod Acheroraptor exhibit distinct ulnar quill knobs, skeletal features that in extant avians anchor the stiff pennaceous feathers required for aerodynamic lift. It follows that Acheroraptor possessed the capacity for sustained powered flight.
A legal system possesses legitimate authority only if its subjects bear a moral obligation to adhere to its edicts. Because political philosophers have demonstrated that geographical birthright alone cannot generate this moral duty, no modern nation-state holds legitimate authority over its native-born populace.

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Cevap

The correct pairings successfully match each argument's specific logical vulnerability—whether temporal bounds in game theory, reverse causality in neuroscience, alternative anatomical functions in paleontology, or exclusive mechanisms in jurisprudence—to the exact Defender or Supporter assumption required to preserve the argument's validity.
Each correct pairing links an argument with the precise 'Defender' or 'Supporter' assumption it fundamentally requires. The game theory argument requires defending against the 'endgame effect'. The neuroscience argument requires ruling out reverse causality. The paleontology argument requires bridging the gap between anatomical features and specific behavioral capacities. The jurisprudence argument requires ruling out alternative sources of moral obligation. Negating any of these correct matches completely obliterates the conclusion of the corresponding argument.

Adım Adım Çözüm

1
Analyze each argument to separate the premises from the main conclusion.
Identified the core logical gap in each argument (e.g., assuming causality from correlation, assuming an analogy holds perfectly, assuming exclusivity of a mechanism).
Understanding the precise gap between premise and conclusion is necessary to determine what unstated premise must be true to bridge or defend that gap.
2
Apply the Logical Negation Test to each available assumption on the right.
Created the logical opposite of each assumption (e.g., 'Native-born citizens DO acquire a moral duty through other mechanisms').
The defining characteristic of a Necessary Assumption is that its logical negation completely destroys the argument's conclusion.
3
Match the negated assumptions against the arguments to see which conclusion is fatally undermined.
Successfully paired the game theory argument with the temporal bounds assumption, neuroscience with the reverse causality assumption, paleontology with the alternative function assumption, and jurisprudence with the alternative mechanism assumption.
Ensures that the assumption is strictly necessary for the specific logical structure of the matched argument, avoiding scope and relevance errors.

Anahtar Kavram

Necessary Assumption (Negation Test & Argument Evaluation)
Soru 156Soru →

Match each flawed argument excerpt with the abstract description that most accurately identifies its reasoning error:

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Öğeler

Astrophysicist: Thorough spectroscopic searches of the Kepler-186 stellar system have failed to detect atmospheric biosignatures. Therefore, we can definitively conclude that no biological organisms exist on any planet orbiting that star.
Patent Attorney: For an algorithmic process to be granted patent protection under current statutory guidelines, it must demonstrate a tangible technical effect on physical hardware. Because the applicant's new encryption algorithm undeniably produces a measurable reduction in hardware circuit temperature during execution, it is guaranteed to receive patent approval.
Forestry Director: Immediately after our department initiated prescribed understory burns in the northern pine reserve, overall canopy moisture levels increased significantly over the following season. It is clear that conducting prescribed burns directly causes tree canopies to retain greater moisture.
Clinical Nutritionist: A four-week dietary regimen high in branched-chain amino acids dramatically enhanced muscle protein synthesis in a study of twenty elite collegiate weightlifters. Consequently, adopting this exact regimen will significantly enhance muscle mass for typical adult gym-goers.

Eşleşmeler

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Cevap

The correct pairings match: (1) the astrophysicist's argument with the description of treating absence of evidence as proof of nonexistence, (2) the patent attorney's argument with the description of confusing a necessary condition for a sufficient one, (3) the forestry director's argument with the description of inferring causation from temporal succession, and (4) the clinical nutritionist's argument with the description of generalizing from an atypical sample.
Each pair correctly matches a specific argument excerpt with its corresponding structural flaw: failing to find evidence does not prove nonexistence (appeal to ignorance); satisfying a prerequisite does not guarantee an outcome (necessary vs. sufficient confusion); an event preceding another does not establish causation (post hoc ergo propter hoc); and a sample of elite weightlifters cannot be presumed representative of average gym-goers (unrepresentative sample).

Adım Adım Çözüm

1
Analyze each excerpt's premises and conclusion to identify the core logical vulnerability in each passage.
The first excerpt equates lack of biosignature detection with proof of absence; the second mistakes a patent prerequisite for a guarantee; the third infers causation from temporal order; the fourth generalizes findings from elite athletes to the general public.
Accurately diagnosing the logical disconnect between premise and conclusion is essential before selecting matching abstract flaw descriptions.
2
Map each diagnosed vulnerability to its corresponding formal flaw description among the right-hand items.
Excerpt 1 corresponds to absence of evidence; excerpt 2 corresponds to necessary-versus-sufficient confusion; excerpt 3 corresponds to post hoc causal reasoning; excerpt 4 corresponds to unrepresentative sampling.
Each abstract statement precisely captures the structural defect of exactly one argument excerpt.

Anahtar Kavram

Flaw in the Reasoning
Tahmini Süre:1m 30s
Soru 157Soru →

Match each logical argument on the left with the supplementary premise on the right that most effectively strengthens its central conclusion.

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Öğeler

Paleontologist: Juvenile fossil specimens of the herbivore Dicynodon exhibit dental micro-striations identical to those caused by consuming silica-rich wetland horsetails, whereas adult specimens lack these striations. Therefore, juvenile Dicynodon inhabited riparian wetlands while adults lived in arid uplands.
Neurologist: Patients with chronic insomnia who listened to low-frequency binaural acoustic tones for thirty minutes before sleep experienced forty percent fewer nocturnal awakenings than a control group listening to white noise. Thus, low-frequency acoustic stimulation directly induces synchronized cortical delta waves during sleep.
Agronomist: Crop plots treated with mycorrhizal fungal inoculants produced twenty-five percent higher grain yields under moderate drought than untreated plots. Because fungal hyphae expand root surface area, this yield advantage was entirely due to enhanced water uptake efficiency.
Art Historian: Infrared reflectography of a disputed Renaissance portrait reveals an underdrawing executed in carbon ink with fluid hatching unique to Master V. Because workshop apprentices were strictly required to use dry charcoal, Master V himself must have drawn this underdrawing.

Eşleşmeler

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Cevap

Match the paleontology argument with the premise regarding horsetail ecological restriction and enamel wear retention; match the neurology argument with the premise confirming EEG delta-wave surges and equal subjective relaxation; match the agronomy argument with the premise involving the nutrient-defective mutant fungal strain; match the art history argument with the premise establishing locked ink storage and restricted sketch access.
Each correct pairing resolves the specific inferential vulnerability present in the respective argument. The paleontology argument is strengthened by confirming that horsetails were exclusively riparian and that adult teeth would have preserved juvenile striations. The neurology argument is strengthened by objective electroencephalogram verification of delta-wave synchronization and control of relaxation variables. The agronomy argument is strengthened by experimental isolation proving that non-water fungal contributions were not responsible for the yield increase. The art history argument is strengthened by confirming that apprentices had zero access to carbon ink and that copyists could not have accessed the preparatory sketches.

Adım Adım Çözüm

1
Analyze the reasoning gap in the paleontology argument
The argument concludes that habitat segregation caused the wear difference, assuming adults did not simply overwrite juvenile wear and that horsetails only grew in wetlands.
Strengthening requires validating the environmental restriction of horsetails and ensuring tooth wear persistence across life stages.
2
Analyze the reasoning gap in the neurology argument
The argument concludes that sound waves specifically triggered cortical delta waves based solely on reported awakenings, assuming awakenings were not reduced via general relaxation or placebo effects.
Strengthening requires direct physiological confirmation of delta-wave activity and ruling out general relaxation.
3
Analyze the reasoning gap in the agronomy argument
The argument attributes the entire yield benefit to water uptake, assuming the fungus provided no other drought-mitigating benefits such as enhanced phosphorus or mineral uptake.
Strengthening requires isolating water uptake from mineral nutrition mechanisms.
4
Analyze the reasoning gap in the art history argument
The argument concludes Master V drew the underdrawing based on the medium and style, assuming apprentices never obtained ink and outside copyists could not replicate the style.
Strengthening requires establishing strict exclusivity of ink access and stylistic privacy.

Anahtar Kavram

Strengthening Deductive and Causal Inferences by Ruling Out Rival Hypotheses and Confirming Necessary Mechanisms
Tahmini Süre:2m 30s
Soru 158Soru →

Forestry researcher: In high-elevation pine forests, stands treated with mechanical thinning showed a significantly lower rate of bark beetle infestations over a three-year observation period than adjacent untreated stands. Because thinning increases the spacing between trees, thereby increasing sunlight penetration and reducing tree competition for soil moisture, the researcher concluded that reduced water stress directly enhanced the trees' physiological capacity to produce defensive resin against beetles.

Statement: The finding that elevated wind speeds in thinned forest stands physically disperse and dilute the aggregation pheromones used by bark beetles to coordinate mass attacks strengthens the forestry researcher's conclusion.

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Cevap: False

Cevap

False
The statement is false because the supplementary finding acts as a weakener rather than a strengthener. In causal arguments, introducing an alternative mechanism (wind disrupting beetle communication) that fully explains the observed effect (lower infestation rates) undermines the author's specific conclusion that the effect was produced by enhanced resin defenses resulting from reduced water stress.

Adım Adım Çözüm

1
Identify the premises and conclusion of the argument.
Premise: Thinned stands had lower beetle infestation rates and reduced tree competition for water. Conclusion: Reduced water stress directly enhanced the trees' physiological capacity to produce defensive resin against beetles.
To evaluate whether supplementary evidence strengthens an argument, one must isolate the author's exact causal mechanism rather than just the general outcome.
2
Analyze the logical impact of the supplementary finding on the posited causal relationship.
The supplementary finding demonstrates that higher wind speeds in thinned stands disrupt beetle pheromones, which directly reduces beetle attacks without involving tree resin or water stress.
Determining whether new information supports or undermines the specific link between the stated cause (resin from reduced water stress) and effect (fewer infestations).
3
Determine whether introducing an alternative causal pathway strengthens the argument.
Introducing a competing, independent cause for the observed correlation weakens the author's claim that resin defense was the active cause.
An alternative explanation for the observed correlation undermines the author's proposed causal mechanism, making the statement that it strengthens the conclusion false.

Anahtar Kavram

Causal Strengthening and Alternative Explanations in Logical Reasoning
Soru 159Soru →

Neurologist: The conscious perception of visual stimuli invariably triggers a specific sequence of widespread neural activation in the prefrontal cortex, known as the P-wave cascade. During our latest experiments with anesthetized subjects, we observed the precise P-wave cascade in several patients when they were exposed to intense flashes of light. This demonstrates that, contrary to conventional medical consensus, anesthetized patients are capable of consciously perceiving visual stimuli.

Which of the following most accurately describes the logical flaw in the neurologist's reasoning?

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Cevap: The argument interprets evidence that a specific cognitive state invariably produces a certain neurological outcome as establishing that the outcome cannot occur in the absence of that state.

Cevap

The correct answer is the option stating that the argument interprets evidence that a specific cognitive state invariably produces a certain neurological outcome as establishing that the outcome cannot occur in the absence of that state.
The argument explicitly states that conscious perception 'invariably triggers' the P-wave cascade, establishing the cascade as a necessary condition of conscious perception. However, by concluding that conscious perception must be present simply because the cascade was observed, the author illicitly treats the cascade as a sufficient condition. By doing so, the author assumes the outcome (the cascade) cannot possibly occur in the absence of the state (conscious perception).

Adım Adım Çözüm

1
Identify the main conclusion of the argument.
The conclusion is that anesthetized patients are capable of consciously perceiving visual stimuli.
Isolating the main conclusion is the required first step to analyze the logical structure of any argument.
2
Identify the premises provided to support the conclusion.
Premise 1: Conscious perception invariably triggers the P-wave cascade. Premise 2: The P-wave cascade was observed in anesthetized subjects.
Understanding the evidence reveals how the author attempts to justify their conclusion.
3
Analyze the formal logical relationship between the premises and the conclusion.
The first premise establishes a conditional relationship: Conscious Perception → P-wave cascade. The author then observes the necessary condition (P-wave cascade) and illicitly deduces the presence of the sufficient condition (Conscious Perception).
Mapping the conditional logic uncovers the structural vulnerability: affirming the consequent (or Mistaken Reversal).
4
Evaluate the options to find the abstract description of this formal flaw.
The correct description notes that the author takes evidence of 'State → Outcome' and interprets it as establishing 'Outcome cannot occur without State' (which is logically equivalent to Outcome → State).
This abstract phrasing perfectly captures the argument's assumption that nothing other than conscious perception could have caused the P-wave cascade.

Anahtar Kavram

Conditional Logic Flaws: Mistaken Reversal (Affirming the Consequent)
Soru 160Soru →

A philanthropic organization is obligated to rescind financial support from any research consortium that reallocates primary grant funds toward unapproved speculative methodologies, unless the consortium has already published peer-reviewed breakthroughs. However, financial support must under no circumstances be rescinded if such an action would irreparably compromise vital longitudinal clinical trials, provided that the investigators transparently disclosed all financial reallocations to an independent oversight committee.

Which one of the following scenarios most closely conforms to the principle stated above?

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Cevap: The Zenith Foundation's grantee, an oncology consortium, reallocated primary grant funds to unapproved speculative methodologies and has yet to publish any peer-reviewed breakthroughs. Although rescinding support would irreparably compromise vital longitudinal clinical trials, the investigators deliberately concealed their reallocations from the independent oversight committee. Therefore, the Foundation is obligated to rescind financial support.

Cevap

The scenario describing the Zenith Foundation correctly applies the principle. Since the grantee reallocated funds without breakthroughs, the obligation to rescind is triggered. The exception protecting the grant does not apply because the investigators concealed the reallocations, failing the necessary condition of transparency.
The correct answer accurately synthesizes both layers of the principle. The initial condition for mandatory rescission is satisfied because the oncology consortium reallocated funds without having published breakthroughs. Next, we must check if the override condition (which forbids rescission) is triggered. Although the trials would be compromised, the investigators failed the necessary condition of transparent disclosure by concealing their actions. Because the exception is blocked, the original obligation to rescind remains perfectly valid.

Adım Adım Çözüm

1
Deconstruct the primary rule for rescission.
IF (Reallocates Funds AND NOT Published Breakthroughs) THEN (Obligated to Rescind).
To establish the precise baseline conditions that mandate revoking funding.
2
Deconstruct the exception clause that prohibits rescission.
IF (Irreparably Compromises Trials AND Transparently Disclosed) THEN (Must NOT Rescind).
To identify the specific scenario that overrides the primary rule and forbids revocation.
3
Evaluate the correct scenario against both rules.
The Zenith Foundation grantee met the conditions for mandatory rescission (reallocated funds, no breakthroughs). The exception did not apply because the necessary condition of transparent disclosure was failed (they concealed the funds).
To confirm that the conclusion logically and necessarily follows from the application of the conditional premises.

Anahtar Kavram

Complex Conditional Logic and Principle Application
ÖncekiSayfa 8 / 34Sonraki
Logical Reasoning Alıştırma Soruları — LSAT — Sayfa 8 | Examkin