Identify and explain the three criteria for a psychological test to be valid.
a. Content validity: This criterion ensures that the test covers all relevant aspects of the construct it is supposed to measure. For example, a depression test should include questions about various symptoms of depression.

b. Criterion-related validity: This criterion examines how well the test scores are correlated with external criteria that are already established as valid measures of the construct. For example, a measure of intelligence should correlate with academic performance.

c. Construct validity: This criterion assesses whether the test accurately measures the underlying theoretical construct it is intended to measure. For example, a test for anxiety should actually measure anxiety, not some other related construct.

d. Predictive validity: This criterion examines whether the test can accurately predict future behavior, outcomes, or performance related to the construct. For example, a job aptitude test should be able to predict how well a person will perform in a specific job role.