Objectives: To evaluate the reliability and validity of measures taken during the Chester step test (CST) used to predict VO 2 max and prescribe subsequent exercise. Methods: The CST was performed ...

SPSS is an integrated system of computer programs designed for the analysis of social sciences data. AMOS is a companion to SPSS for Windows. SPSS Base/Academic Edition provides capabilities that ...

Campbell and Stanley's discussion of the external validity of experiments is extended and refined. Two classes of threats to external validity are identified: (1) those dealing with generalizations to ...

Vol. 45, No. 1/3, Validity Theory and the Methods Used in Validation: Perspectives from Social and Behavioral Sciences (Nov., 1998), pp. 35-44 (10 pages) In this note I comment briefly on Keith Markus ...