Differentiation of brain damage among low IQ subjects with three projective techniques.

Using a battery of three projective techniques (Rorschach, Hand Test, Bender-Gestalt) only slight discrimination was found between low IQ subjects classified according to the presence or absence of brain trauma (exogenous vs endogenous), while substantial discrimination was obtained between the same subjects categorized in terms of "lower" (60-74) and "higher" (75-89) FS WAIS IQ. All four groups used in this study had been first equated on sex and age. Results were interpreted as supporting the position that some sort of brain impairment underlies most or all retardation. Question was raised concerning the efficacy of projective techniques for diagnosing organicity in subjects of average or better intelligence.     

The Differential Diagnostic Technique, a visual motor projective test

The Differential Diagnostic Technique is a projective drawing test in which the individual is asked to copy 14 figures, presented one at a time. Research indicates the usefulness of the test as an objective measure of personality and points to its diagnostic use for certain neuropsychological problems and in research.     

The Differential Diagnostic Technique: a visual-motor projective test: further research

Within a wide variety of research settings and problems investigation the Differential Diagnostic Technique continues to indicate its usefulness as an objective measure of certain personality characteristics.     

Juvenile recidivism: a comparison of three prediction instruments

Risk-assessment instruments are increasingly being used, the majority of research evaluating such instruments with adult offenders. The purpose of this study was to compare three models being used to predict recidivism in juvenile offenders. Discriminant analysis was used to examine the extent to which these various models could discriminate between recidivists and nonrecidivists. The results indicated that only one model had adequate predictability. Since little research has been done with risk-prediction instruments for juvenile offenders, these results offer tentative promise for the future development of such an instrument.