Experimental psychology is witnessing an increase in research on individual differences, which requires the development of new tasks that can reliably assess variations among participants. To do this, cognitive researchers need statistical methods that many researchers have not learned during their training. The lack of expertise can pose…

The Department of Defense directed that the military services move toward the use of a common aptitude battery for satisfaction of their personnel selection requirements. The content of existing service classifications were studied during the initial phase of battery redesign. Elements from the Army Classification Inventory, the Navy Vocational…

Strong-Campbell Interest Inventory items which differentiated between males and females by more than nine percentage points were removed in an attempt to develop a unisex occupational scale for pharmacists. The remaining items formed a unisex scale nearly as reliable and valid as the original, over short term periods. (MH)

This study offers field estimates of the factor validity and internal consistency reliability of the Self-Esteem Index (SEI) using SEI data from 208 regular and special education students in grades 3, 4, and 5. Exploratory factor analytic results support the existence of four factors as anticipated; however, various inconsistencies are noted…

Investigations into item bias provide an empirical basis for the identification and elimination of test items which appear to measure different traits across populations or cultural groups. The Psychometric rationales for six approaches to the identification of biased test items are reviewed: (1) Transformed item difficulties: within-group…