StrengthenDiff: Easy
Logic Breakdown
Passage Summary: Marmosets are usually lefties, and scientists think the babies learn this by copying their parents rather than just being born that way.
Conclusion: Infant marmosets acquire their handedness preference by imitating their parents.
Reasoning: Marmosets are known to show hand preferences (mostly left-handed), and infants are highly imitative creatures.
Analysis: To strengthen this causal hypothesis, we need to see a tighter link between the behavior of the parents and the eventual behavior of the offspring. Currently, the argument only tells us that marmosets are mostly left-handed and that infants imitate; it doesn't prove they imitate handedness specifically. Look for an answer choice that provides a correlation, such as showing that infants raised by the rare right-handed marmosets also become right-handed. This would help rule out the possibility that handedness is purely biological or random.
Conclusion: Infant marmosets acquire their handedness preference by imitating their parents.
Reasoning: Marmosets are known to show hand preferences (mostly left-handed), and infants are highly imitative creatures.
Analysis: To strengthen this causal hypothesis, we need to see a tighter link between the behavior of the parents and the eventual behavior of the offspring. Currently, the argument only tells us that marmosets are mostly left-handed and that infants imitate; it doesn't prove they imitate handedness specifically. Look for an answer choice that provides a correlation, such as showing that infants raised by the rare right-handed marmosets also become right-handed. This would help rule out the possibility that handedness is purely biological or random.
Passage Stimulus
Passage Redacted
Unlock Full Passage1.Which one of the following, if true, most supports the researchers' hypothesis?
Correct Answer
E
Marmosets raised with unrelated right-handed adults end up more often right-handed. That pattern supports the idea that the observed handedness is learned by imitation of the rearing models rather than determined by genetics or birth family, directly backing the hypothesis.
Upgrade Your Prep
Ready to go beyond free explanations?
LSAT Perfection is the #1 modern LSAT prep platform, trusted by thousands of students for comprehensive test strategies, advanced drilling, and full analytics on every PrepTest.
Detailed explanations for 59 PrepTests
Advanced drillset builder
Personalized analytics
Built-in Wrong Answer Journal