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Difficulty: Very hardCorrelation vs. Causation

A comprehensive review of international corporate law firms over the past decade revealed a striking statistical anomaly: firms that officially adopted a heavily subsidized "sabbatical leave" program for their mid-level associates subsequently demonstrated a 30 percent higher rate of those associates being promoted to senior partner compared to firms without such programs. The analysts conducting the review concluded that the period of extended rest provided by the sabbaticals directly rejuvenates the associates, thereby enhancing their cognitive endurance and causing the increased rate of prestigious promotions.

Which of the following statements, if true, provide a valid alternative explanation for the observed correlation, thereby weakening the analysts' causal conclusion? (Select all that apply)

  1. Law firms possessing the immense financial reserves necessary to subsidize extensive sabbaticals also utilize those reserves to aggressively recruit the industry's most naturally gifted law school graduates, who are inherently more likely to earn partnerships.Answer
  2. Firm management exclusively approves sabbatical leave for those exceptional mid-level associates who have already independently secured major client victories and are implicitly guaranteed future senior partnerships.Answer
  3. C
    The absolute number of associates promoted to senior partner at firms offering sabbaticals is frequently lower than the total number of associates promoted at global mega-firms that lack such programs.
  4. D
    The analysts' conclusion relies on the flawed assumption that enhanced cognitive endurance is the exclusive requirement for an associate to be promoted to senior partner.
  5. E
    Mid-level associates at firms that recently eliminated their sabbatical programs reported a subsequent, significant decline in their overall cognitive endurance and job satisfaction.

Answer

The correct statements are the one identifying the firm's financial reserves as a common cause for both sabbaticals and top talent, and the one identifying that sabbaticals are exclusively awarded to associates already guaranteed a partnership.
The correct statements successfully undermine the causal conclusion by providing alternative explanations for the observed correlation. One introduces a third variable (the firm's wealth), explaining that rich firms can afford both the sabbatical programs and the best entry-level talent, meaning the talent itself drives the promotions. The other introduces reverse causality, explaining that associates who are already highly successful and on the partner track are the only ones allowed to take sabbaticals, meaning the impending promotion causes the sabbatical, not vice versa.

Step-by-Step Solution

1
Identify the core argument and its causal claim.
Premise: Firms with sabbatical programs have a 30% higher partner promotion rate. Conclusion: Sabbaticals cause enhanced cognitive endurance, which causes increased promotions.
Understanding the exact causal relationship the author claims is necessary to accurately find an alternative explanation.
2
Analyze the question stem's specific task.
The task requires finding statements that provide a 'valid alternative explanation' for the correlation. In LSAT logic, this typically means identifying a third variable (common cause) or establishing reverse causality.
Recognizing this is a Weaken question specifically targeting a Correlation vs. Causation flaw ensures we look for alternative causal mechanisms rather than just generalized weaknesses.
3
Evaluate the options for alternative causal explanations.
One correct statement introduces a third variable (financial wealth causes both the program to exist and the hiring of better lawyers). Another correct statement introduces reverse causation (being highly successful and on the partner track causes the associate to receive the sabbatical, not the other way around).
Both of these scenarios perfectly explain the statistical correlation without accepting the analysts' conclusion that the sabbaticals themselves cause the promotions.
4
Eliminate distractors based on common logical fallacies.
Eliminate the statement comparing absolute numbers to percentages, the statement attacking a non-existent exclusive assumption, and the statement that actually strengthens the causal claim by showing what happens when the program is removed.
Distractors in LSAT causal flaw questions often use irrelevant numerical comparisons, misidentify the core flaw, or perform the opposite of the requested logical task.

Key Concept

Correlation does not imply causation because the observed relationship may be driven by a third variable (common cause) or by reverse causality.
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Topics

Correlation vs. Causation

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