McGraw-Hill Education GRE 2019

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15. The between many major scientific discoveries and the
    original intent of the studies that led to these discoveries is a commentary
    on the serendipity at the heart of much scientific research.
    A complexity
    B convolutedness
    C synchrony
    D discordance
    E incongruity
    F fallibility

Question 16 is based on the passage below. Select one answer choice.

Research shows that partners whose sleep-and-wake cycles are at least

three hours apart tend to express less closeness with their partners

than do couples with more closely-aligned sleep-and-wake cycles. Since

mismatched sleep-and-wake cycles probably make partners less likely

to share common activities, counseling these couples to have better-

matched sleep-and-wake cycles would help alleviate their relationship

discord.

16. Which of the following, if true, would best weaken the argument?
    A Couples who do not have different sleep-and-wake cycles argue
    sometimes.
    B Sleep-and-wake cycles are related to serotonin levels, which can
    change with proper habit modification.
    C Research shows that partners often develop different sleep-and-wake
    cycles as a way to express frustration with one another.
    D Different personality types can often create irreconcilable differences
    in relationships.
    E The research cited in the argument only refers to couples who have
    been together for at least a year.

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CHAPTER 2 ■ GRE DIAGNOSTIC TEST 35

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