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Difficulty: MediumCorrelation vs. Causation

An educational psychologist conducted a longitudinal study on cognitive development and found a strong correlation: children who became bilingual before the age of five were significantly more likely to exhibit advanced mathematical problem-solving skills by age ten than their monolingual peers. The psychologist concluded that the process of acquiring a second language early in life directly enhances the specific neural pathways required for advanced mathematical reasoning.

Which of the following statements, if true, provide a valid alternative explanation for the observed correlation that weakens the psychologist's conclusion? (Select all that apply)

  1. Parents who prioritize and have the resources to provide early second-language instruction often simultaneously enroll their children in accelerated mathematical enrichment programs.Answer
  2. Children who possess innate neurological advantages in abstract pattern recognition—the core of mathematical reasoning—are naturally more capable of easily acquiring multiple languages during early childhood.Answer
  3. C
    Children who are exposed to a second language early in life often experience temporary delays in their primary language vocabulary development.
  4. D
    Brain imaging reveals that the neural networks stimulated by early bilingualism heavily overlap with the networks utilized during complex mathematical computations.
  5. E
    A recent survey demonstrated that adults who are bilingual are significantly more likely to be employed in professions that require advanced mathematical competencies.

Answer

The correct statements are those identifying parental resources and priorities as a common cause, and innate neurological advantages as a reverse cause.
The correct answers effectively weaken the psychologist's conclusion by providing alternative explanations for the correlation. One answer identifies a third variable—parental resources and priorities—that independently causes both early bilingualism and advanced math skills. The other answer suggests reverse causality, proposing that innate neurological advantages for abstract reasoning actually cause the successful acquisition of a second language.

Step-by-Step Solution

1
Analyze the argument's structure.
Premise: There is a correlation between early bilingualism and advanced math skills. Conclusion: Bilingualism causes advanced math skills.
Identifying the core causal claim is necessary to evaluate the argument's vulnerabilities.
2
Identify the logical flaw.
The argument assumes causation from a mere correlation, failing to consider alternative explanations.
Recognizing the 'correlation vs. causation' flaw dictates the strategy for weakening the argument.
3
Evaluate options for alternative causal explanations.
One correct option identifies a third variable (parents enrolling kids in multiple enrichment programs), while the other identifies reverse causality (innate math skills making language learning easier).
Valid alternative explanations successfully weaken the original causal conclusion by showing the correlation could exist without the author's proposed causal relationship.

Key Concept

Weakening a causal argument by identifying third-variable (common cause) and reverse-causation scenarios.
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Topics

Correlation vs. Causation

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