Achievement, ability, and intelligence tests can be used as an aid for school placement, to determine the presence of a learning disability or developmental delay. Intelligence tests measure the level of an individual's intellectual functioning and cognitive ability. Common ability tests include the Wechsler Intelligence Tests.
Personality tests are administered to help in diagnosing psychopathology such as a personality depressive or psychotic disorder. They evaluate the thoughts, emotions, attitudes, and behavioral traits that make up personality. Test results reveal personality strengths and weaknesses and can identify disturbances in personality. Common personality tests include the Minnesota Multiphasic Personality Inventory and the Millon Clinical Multiaxial Inventory. Other personality tests are projective. These include the Rorschach Test and the Thematic Apperception Test.