Reading ComprehensionDifficulty: Medium

PT134 S4 P3 Q17 Explanation

Evolutionary Psychology

A free, expert breakdown of this official LSAT Reading Comprehension question.

TopicsPrimary PurposeScience

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Passage

Passage A Evolutionary psychology has taught us to examine human behavior from the standpoint of the theory of evolution—to explain a given type of human behavior by examining how it contributes to the reproductive success of individuals exhibiting the behavior, and thereby to the proliferation of the genetic material responsible for causing an individual expends energy or other valuable resources promoting the welfare of another individual?

The answer probably lies in the psychological experiences of identification and empathy. Such experiences could have initially arisen in response to cues (like physical resemblance) that indicated the presence of shared genetic material in human ancestors. The psychological states provoked by these cues could have increased the chances of related individuals’ receiving child; genes promoting their own self-propagation may thus operate through instinctive actions that appear unselfish.

Since human ancestors lived in small, kin-based groups, the application of altruistic mechanisms to the entire group would have promoted the propagation of the genes responsible for those mechanisms. Later, these mechanisms may have come to apply to humans who are not kin when mechanisms may have arisen within a genetically “selfish” system.

Passage B Evolutionary psychology is a kind of conspiracy theory; that is, it explains behavior by imputing an interest (the proliferation of genes) that the agent of the behavior does not openly acknowledge, or indeed, is not even aware of. Thus, what seemed to be out to be your genes’ conspiracy to propagate themselves.

Such arguments can appear persuasive on the face of it. According to some evolutionary psychologists, an interest in the proliferation of genes explains monogamous families in animals whose offspring mature slowly. Human offspring mature slowly; and, at least in numerical terms, our species favors monogamous families. Evolutionary psychologists take of our interest in propagating our genes. Are they right?

Maybe yes, maybe no; this kind of inference needs to be handled with great care. There are, most often, all sorts of interests that would explain any given behavior. What is needed to make it decisive that a particular interest explains a particular behavior is that the behavior would be reasonable only after all; there must be some things that one cares for just for their own sakes.

What this question is testing

Primary Purpose

Your task

Pin down exactly what the question asks about the passage — a detail, the author's view, the structure, or the main point — before looking at the choices.

Common trap

Answers that restate a true detail from the passage but don't answer the specific question being asked.

Winning move

Anticipate the answer in your own words from the passage, then find the choice that matches that prediction.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
17.

How does the purpose of passage B relate to the content of

Answer choices

  1. Unsupported Relationship2% picked this

    The author of passage B seeks to support the main claims made in passage A by presenting additional arguments

    Passage B is mainly written to push back against Passage A. The author of B is a skeptic of evolutionary psychology, like that in Passage A. So we wouldn't say B is seeking to support A's main claims.

  2. Out of Scope: analogous argument2% picked this

    The author of passage B criticizes the type of argument made in passage A by attempting to create an analogous argument with

    There isn't any analogy in passage B other than the metaphor of "conspiracy theory" being used in the first sentence. But the author of passage B doesn't create an argument about conspiracy theories with a conclusion that is clearly false.

  3. Unsupported Objection3% picked this

    The author of passage B argues that the type of evidence used in passage A is often

    Passage B is criticizing the type of reasoning done in passage A, that it makes an confident leap to an evolutionary explanation when there are other possible explanations. Passage B does not criticize the accuracy of the evidence, i.e. "Those observed data points are erroneous data points"

  4. Too Strong: vacuous / no possible16% picked this

    The author of passage B maintains that the claims made in passage A are vacuous because no possible evidence

    Calling a claim vacuous means it's hollow, empty, meaningless (a vacuum). The author of B is not trashing evolutionary psychology, just pumping the brakes and saying, "are we sure we're not getting carried away? these sorts of causal inferences are tricky". Passage B never complained that there was no conceivable kind of evidence that could ever resolve this debate. This answer is saying "no possible evidence could confirm or rule out this idea".

  5. Correct78% picked this

    The author of passage B seeks to undermine the type of argument made in passage A by suggesting that

    Why this is right

    The 1st paragraph of B summarizes the reasoning from evolutionary psychology. The 2nd paragraph of B begins by saying, "such arguments can appear persuasive on the face of it". This definitely signals that the author is here to question the reasoning. The last sentence of 2nd paragraph is saying, evolutionary psychologists take this as evidence that ____ . Are they right? That pair of sentences is explicitly questioning the reasoning. The final paragraph discusses how we need to handle such inferences (handle drawing such conclusions) with care.

    Skill tested: Primary Purpose · how this choice captures the passage's function is the move to repeat next time.

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