Background: Research about the psychometric properties of the Behavioural Appraisal Scales (BAS) in people with profound intellectual and multiple disabilities (PIMD) is limited. This study evaluates invariance in factor structure, item bias and convergent validity of the BAS. Methods: Data on the BAS from two studies (n = 25; n = 52) were…

This study describes the importance of creativity in the identification of gifted elementary-aged children and presents the process of validating a scale for rating the creativity of the students through the teachers' responses. The results show the instrument's unifactorial structure, satisfactory levels of internal consistency, as well as…

The purpose of this study was to replicate the study conducted by Potter, Sagraves, and McDonald to determine whether their recommended analysis could separate criterion variables into similar factors that were stable from year to year and from school to school. The replication samples consisted of all students attending Louisiana State University…

The primary objectives of this project commonly refereed to as "Assessing Human Abilities" were: (1) to provide reference measures for cognitive factors; and (2) to provide a guide to reference measures for self-report temperament factors. The overall objective was to conduct research in the area of factor analysis directed toward the…

This study assessed level and structure differences across sex and ethnic groups on a newly developed multiple aptitude battery, called the Ball Aptitude Battery (BAB), and established and examined the concurrent and differential validities of the battery relative to different groups. The 17 Ball ability variables are: clerical test; idea fluency;…

Examines whether individual intelligence tests such as the WISC-R are biased against Hispanic school-aged children. Discusses three common but faulty notions of test bias, and advances a psychometric definition of bias. Analyzes evidence regarding external and internal validity. Presents guidelines for intellectual assessment of bilingual…

An overview of the development of a computerized version of the Differential Aptitude Tests (DAT) is presented. It describes the previously existing printed version of the DAT, design of the computerized adaptive edition, calibration of the test items for use in the computerized version, and two field studies that compared the Adaptive and…

The development of psychological methods for assessing the abilities of deaf students could aid in the formation of educational programs and the provision of vocational guidance. A battery of tests designed to measure a wide range of functions was administered to all eighth grade students, average age 15, in schools for the deaf in Sweden. All…

As a measure of musical aptitude, a new 90-item Pitch Discrimination Test was developed, and its internal structure was examined. Each of the three sections of the test measures an individual's aptitude for pitch discrimination in a different frequency range using square-wave tones generated by a personal computer. A total of 1,303 examinees,…