Discusses knowledge needed by counselors to help in choosing appropriate tests for particular clients and problems under consideration and in properly interpreting test scores and integrating them into the total assessment process. Focuses on both statistical and technical knowledge about tests and substantive psychological knowledge about…

Describes the role of information on score reliabilities, significance of score differences, intercorrelations of scores, and differential validity of score patterns on the interpretation of results from multiscore batteries. (Author)

Discusses the changes in psychological testing and the rapidity of their development. Describes trends in the role of the test user, technical methodology of test construction, and interpretation of test scores. (Author)

The complexity and rapid expansion of the entire field of psychology make it appropriate to speak of "psychologies" when acknowledging the need for specialization of training and expertise. Nevertheless, unifying trends (UTs) exist in psychology, even though there can be no single set of theoretical principles to account for all empirical…