Psychology researchers observed that parents feel emotion while singing to their infants. The researchers hypothesize...

Cameron on March 19, 2019

Choice A

The passage says that parents feel more emotion when singing to their kids, but the experiment simply tests if adults have more emotion when singing to their kids vs. to an empty room. Someone could easily say that there was more emotion not because they were singing to their kids but because they were singing to a person. Choice A combats that weakness in the argument. I do not understand why it is wrong.

2 Replies

Jeremy on May 17 at 10:56PM

Same question here. Please explain.

Jeremy on May 17 at 11:26PM

My best guess at an explanation: The thrust of the argument is that the "psychologists were able to correctly identify, by listening alone, which recordings were of parents singing to their children." As such, we can conclude that the premise that would most strengthen the argument would tell us something about the aural qualities of the singing in question. A does not do this and as such does not strengthen the argument in question. Nor do B, C, or E. D - "When a person feels emotion, the emotion provokes involuntary physiological responses that affect the vocal cords and lungs" - by contrast does.