Brianna has an IQ of 129 and Jenna has an IQ of 117. Brianna performs better than Jenna does on both a simple and a choice reaction time test. Brianna outperforms Jenna by:
A) about the same amount on the two tests
B) much more on the test of simple reaction time
C) much more on the test of choice reaction time
D) a or b

Question

Quizplus · Accepted Answer

IQ correlates with reaction time, and higher IQ individuals tend to perform better on cognitive tasks, including reaction time tests. Since Brianna has a higher IQ, it makes sense that she outperforms Jenna on both tests. However, since choice reaction time involves processing more information, it is likely that the difference between Brianna and Jenna's performance is greater on the choice reaction time test. Therefore, choice C is the best choice.

Brianna Has an IQ of 129 and Jenna Has an IQ