A psychologist administers an intelligence test to a group of grade school children and then administers this same test to these children two weeks later. The psychologist finds that the children's scores have changed significantly from the first to the second administration. Due to this finding, the psychologist should
A)inform the parents of the instability of their children's IQ.
B)question the reliability of the test.
C)assume the test is not providing an operational definition of intelligence.
D)realize that the test lacked the required objectivity to be considered an intelligence test.

Question

Quizplus · Accepted Answer

The significant change in scores over a short period suggests issues with the test's reliability, as reliable tests should produce consistent results over time if the tested attribute (intelligence, in this case) remains unchanged.

A Psychologist Administers an Intelligence Test to a Group of Grade