Practise interpreting intelligence-test results through IQ distributions and percentile scores while evaluating reliability and validity in assessment contexts.
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?
This personality test has low reliability but high validity.
The test is probably high in construct validity but isn't very predictive.
These test norms and standardization probably need improvement.
The results indicate that the test has low test-retest reliability.
D