A "good" test item on an ability test is one
A) to which almost all testtakers respond correctly.
B) that distinguishes high scorers from low scorers.
C) to which almost all testtakers respond incorrectly.
D) in which it is absolutely impossible to guess the correct answer.

Question

Quizplus · Accepted Answer

A good test item on an ability test distinguishes high scorers from low scorers. If almost all test-takers respond correctly, the item is too easy and does not differentiate well between high and low ability levels. If almost all test-takers respond incorrectly or it is impossible to guess the correct answer, the item is too difficult and does not provide useful information about ability levels.

A "Good" Test Item on an Ability Test Is One