When analyzing a particular item's discriminative abilities for an ability test,the test developer typically compares the responses to the item to
A) the highest and lowest scorers on the test.
B) the highest and middle scorers on the test.
C) the performance on the test of a minority groups to rule out any possible bias.
D) testtakers from predefined age groups to rule out any possible age discrimination.

Question

Quizplus · Accepted Answer

Comparing the responses to the item to the highest and lowest scorers on the test can determine whether the item is discriminating well between those who have high ability and those who have low ability. This is important for the overall validity and reliability of the test. Option B only compares the responses to the highest and middle scorers on the test, which does not provide a complete picture of the item's discriminative abilities. Option C and D are not relevant to the analysis of an item's discriminative abilities.

When Analyzing a Particular Item's Discriminative Abilities for an Ability