A potential confounding factor in the performance of subjects on tests of nonverbal cognitive ability is:
A) a lack of motivation on the part of the subject.
B) damage to the right hemisphere.
C) damage to the left hemisphere.
D) the fact that few good tests of nonverbal abilities exist.
Answer Key

Question

Quizplus · Accepted Answer

A lack of motivation can affect a subject's performance on cognitive tests, acting as a confounding factor by influencing the results independently of the subject's actual cognitive ability.

A Potential Confounding Factor in the Performance of Subjects on Tests