This article reviews issues involved with using norm-referenced measures within an intervention validity model. Methodological examination of intervention validity has become more important as intervention methodologies have become part of federal legislation. However, current practice and federal guidelines often implicitly portray a dichotomy…

The commonly used method of reliance on failure to reject the conventional null hypothesis as a positive indication of equivalence is questioned in a study. An alternative method, based on a re-visioning of the null hypothesis, is proposed which also avoids the uncontrolled type II error present in the traditional method.

The frequency, origin, and interpretative implications of elevation differences on the Minnesota Multiphasic Personality Inventory-2 (MMPI-2) clinical and restructured clinical (RC) scales were examined. Two large clinical samples consisting of 1,770 outpatients and 2,438 inpatients were used for this study. Three potential factors…

In spite of many inherent problems, impact evaluation should remain an integral part of program evaluation, both because impact evaluation brings its budget justification with it, and because its focus on causal hypotheses is an essential part of evaluation. Methodology based on the author's body of work is reviewed. (SLD)