What would a psychometrician conclude about a personality test that tells a person she is an extreme extrovert the first time she takes the test and an extreme introvert the next time she takes it?
1
The test is probably high in construct validity but isn’t very predictive.
2
These test norms and standardization probably need improvement.
3
Like most personality tests, this test is most likely an aptitude rather than an achievement test.
4
The results indicate that the test has low test-retest reliability.