Esther took a science test on Monday. She took the same test again on Wednesday. Her intelligence quotient (IQ) scores on the test were different on both occasions. Even though the test items are correlated with each other, the science professor claims that the test did not adequately test the concept taught in the class. Which of following statements is true about the test?

Question

Quizplus · Accepted Answer

The test has internal reliability because the test items are correlated with each other, indicating consistency within the test. However, the different scores on different days suggest it lacks test-retest reliability, and the professor's claim suggests it lacks construct validity.

Esther Took a Science Test on Monday