Question

Difficulty: MediumParallel Causal Reasoning

Analyze the four causal arguments below. Pair each argument with the abstract description that most accurately characterizes its causal reasoning structure or logical vulnerability.

  • Whenever the municipality enforces a temporary commercial noise ordinance, overall retail revenue in the district drops. Since local consumer spending habits and broader economic conditions remained entirely unchanged during these enforcement periods, the noise ordinances must be responsible for the decline in retail revenue.Asserts a causal relationship by explicitly eliminating plausible alternative explanations for an observed phenomenon.
  • Extensive financial surveys reveal a strong correlation between purchasing a luxury yacht and having an exceptional credit score. Therefore, the act of purchasing a luxury yacht must directly cause an individual's credit score to improve.Infers a causal direction between two correlated events, overlooking the high probability that the assumed effect actually caused the assumed cause.
  • Historical data demonstrates that on days when the coastal theme park sells the highest volume of sunglasses, the nearby public beaches report the highest number of jellyfish stings. This proves that wearing sunglasses somehow attracts jellyfish to the shore.Erroneously assumes a direct causal link between two variables that are almost certainly both independent effects of an unstated common variable.
  • Installing advanced HEPA filtration systems in large office buildings reduces airborne particulate matter. A reduction in airborne particulate matter directly leads to a decrease in employee sick days. Therefore, installing these filtration systems will result in fewer employee sick days.Logically derives a causal connection between an initial condition and a final outcome by establishing an intermediate causal step.

Answer

Argument 1 pairs with eliminating alternatives; Argument 2 pairs with reverse causality; Argument 3 pairs with the third-variable fallacy; Argument 4 pairs with the transitive causal chain.
Each argument demonstrates a distinct paradigm of causal reasoning commonly tested on the LSAT. The retail revenue argument isolates a cause by eliminating alternatives. The luxury yacht argument commits a reverse causality fallacy. The sunglasses argument commits a third-variable (common cause) fallacy. The HEPA filtration argument uses a structurally valid transitive causal chain.

Step-by-Step Solution

1
Analyze the retail revenue argument.
It concludes the noise ordinance caused the revenue drop by stating other conditions remained stable.
This matches the structure of establishing causation by ruling out alternatives.
2
Analyze the luxury yacht argument.
It concludes that buying the yacht causes a good credit score.
This matches the description of overlooking reverse causality, since a good credit score is required to buy a yacht.
3
Analyze the sunglasses and jellyfish argument.
It assumes wearing sunglasses attracts jellyfish.
This matches the fallacy of ignoring a common third cause (warm, sunny weather causes both events).
4
Analyze the HEPA filtration argument.
It maps out: A causes B, B causes C, therefore A causes C.
This matches the valid derivation via an intermediate causal step.

Key Concept

Parallel Causal Reasoning
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