ABSTRACT
Personality assessments are generally used in three areas: clinical practice, occupational selection, and research into personality itself. In common with other kinds of psychological testing, instruments or procedures used to assess personality should have demonstrable reliability and validity. Two kinds of validity are of particular concern: criterion (or empirical) validity and construct validity. Tests that are constructed to discriminate between two or more groups have to show criterion validity. Construct validity is concerned with how well a test measures or describes the attribute in question. The NEO-personality inventory has been developed from the five factor theory with each of the primary factors being differentiated into six or more facets. The resulting scales have good reliability, and their construct validity is demonstrated by high correlations with other inventories based on the factor-analytic approach. Psychodynamic methods are based on the principle of projection.. .
