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26 Jul 2025, 23:48
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Why can't D be considered a strengthener assuming that everyone in the study had an "equal playingfield" in washing hands across both the groups, and hence would eliminate "washing hands" as a cause for wanting to volunteer again?
GMATNinja
07 Aug 2025, 13:21
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soniasw16
Here's a boiled down version of the argument: we have an experiment in which half the subjects described an ethical action and half described an unethical action. Within the unethical group, people who washed their hands were less likely to volunteer for a future experiment that those who didn't wash their hands.
The experimenters then concluded that the unethical-hand-washing folks were less likely to volunteer, in part, because of having described an unethical action.
It's a weird argument, but it boils down to this: why were the unethical hand-washers less willing to volunteer again than the unethical people with gross hands? Was there something about the combination of describing the unethical action and washing their hands? Or was it JUST the handwashing?
Knowing how the subjects compare to the general population can't tell us this. Put another way, the question of whether there's a gap between the hand-washing habits of the people in the experiment and the hand-washing habits of the general population sheds no light on why there was a gap between unethical hand-washers and unethical gross-hands people.
The gap within the experiment subjects is still there, and something is accounting for it. It could be hand-washing alone. It could be the combination of talking about bad behavior and hand-washing. We still don't know.
Because (D) doesn't help us understand the discrepancy between two groups within the experiment, it doesn't strengthen the notion that describing unethical behavior played some role in this gap. So we can eliminate it.
I hope that helps!
23 Aug 2025, 00:45
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Are these questions from the official Verbal Review of 2024-2025?
