Dr. Abaee is developing a new intelligence test. He gives his test to a group of 100 participants and records their scores. Six months later, he retests the same participants on the test and finds that their scores match well with the scores they earned when tested six months earlier. What can we conclude about Dr. Abaee's test based on this study?
A) We can conclude nothing about his test.
B) His test is a good one.
C) His test is valid.
D) His test is reliable.

Question

Quizplus · Accepted Answer

The fact that the participants' scores match well when retested after six months indicates that the test is reliable - it consistently measures the same construct over time. This study cannot, however, provide evidence for the validity of the test (i.e., whether it actually measures intelligence).

Dr Abaee Is Developing a New Intelligence Test