Criterion validity: A type of validity based on showing that scores on the test (predictors) are related to job performance.
Content Validity: A test that is content valid is one that contains a fair sample of the tasks and skills actually needed for the job in question.
Construct validity: A test that is construct valid is one that demonstrates that a selection procedure measures a construct (an abstract idea such as morale or honesty) and that construct is important for successful job performance.