Summarizes issues associated with psychological assessment, concluding that: psychological test validity is strong and is comparable to medical test validity; distinct assessment methods provide unique sources of information; and clinicians who rely solely on interviews are prone to incomplete understandings. Suggests that multimethod assessment…

Reducing the arbitrariness of a metric is distinct from the pursuit of validity, rational zero points, data transformations, standardization, and the types of statistical procedures one uses to analyze interval-level versus ordinal-level data. A variety of theoretical, methodological, and statistical tools can assist researchers who wish to make…

In an effort to improve instruction related to psychometrics and psychological testing for beginning psychology majors, an approach was developed at Pennsylvania's Ursinus College that incorporates active, participatory learning and problem solving. The approach is used in a course on research methods and makes use of a networked computer system…

A computerized method is described whereby a mirror image pair of drawings, simultaneously drawn by the right and the left hands, can be compared. This BASIC computer program, which is available from the authors, has applications to a variety of psychological studies. (Author/JJK)