Jane is considering using two different tests of mechanical aptitude, both of which have good evidence of validity, to help select her auto mechanics. From prior research, she knows that the two tests are correlated at .93. Which of the following recommendations would be best to make to Jane?
A) give both tests to all applicants
B) give one test or the other, but not both
C) use neither test because testing is not a good way to select mechanics
D) find another test that has a higher correlation than .93 with either of the other two tests

Question

Quizplus · Accepted Answer

Given the high correlation (.93) between the two tests, they likely measure very similar constructs or abilities. Using both would not add much additional information to the selection process and would be inefficient in terms of time and resources. Therefore, it's more practical to use just one of the tests.

Jane Is Considering Using Two Different Tests of Mechanical Aptitude