In this paper, several models for the psychometric nature of criterion-referenced tests are presented and results derived with implications for test construction, reliability and validity measures, and educational decision making. Both dichotomous and continuous underlying abilities to perform are considered. Illustrative data fitting both cases…

The construct of motivation toward school is vaguely defined. The Junior Index of Motivation (JIM Scale) is one of few instruments claiming validity in measuring motivation toward school among junior and semior high students. This study discusses the shortcomings of the JIM scale, and compares item and total score characteristics and correlates…

The United States Training and Employment Service General Aptitude Test Battery (GATB), first published in 1947, has been included in a continuing program of research to validate the tests against success in many different occupations. The GATB consists of 12 tests which measure nine aptitudes: General Learning Ability; Verbal Aptitude; Numerical…

The United States Training and Employment Service General Aptitude Test Battery (GATB), first published in 1947, has been included in a continuing program of research to validate the tests against success in many different occupations. The GATB consists of 12 tests which measure nine aptitudes: General Learning Ability; Verbal Aptitude; Numerical…

The United States Training and Employment Service General Aptitude Test Battery (GATB), first published in 1947, has been included in a continuing program of research to validate the tests against success in many different occupations. The GATB consists of 12 tests which measure nine aptitudes: General Learning Ability; Verbal Aptitude; Numerical…

A 15-stage pyramidal test and a 40-item two-stage test were constructed and administered by computer to 111 college undergraduates. The two-stage test was found to utilize a smaller proportion of its potential score range than the pyramidal test. Score distributions for both tests were positively skewed but not significantly different from the…

During a 3-year period, 20 preschool deaf children were matched and given auditory training by the Verbo-tonal method using two different amplification systems (one which amplified from 200 to 5000 hertz and the other from 20 to 5000 hertz). There were three main goals: (1) to compare two different amplification systems to determine if the…

The conceptualization of the term "psycholinguistic ability" led to the definition of an area of language behavior that is not well represented in achievement tests in English nor in existing tests of verbal intelligence. Thus, the Linguistic Ability Test (LAT) was designed, pilot-tested, revised, and field-tested in an attempt to…

The work completed to date on the development and validation of a procedure for assessing the micro-environments of preschool children is summarized. It was speculated that the lack of evidence that compensatory programs facilitate developmental changes in children might be due to actual lack of influence by the programs, to the subtlety of the…

The development and use of instruments for vocational guidance, selection, and placement within the State of Idaho are reviewed. Vocational guidance is defined as assisting the individual to understand himself, the world of work, and career choice. Selection and placement are described as activities characteristically used by educational…

The suppressor variable, a variable wholly uncorrelated with a criterion, but which nevertheless improves prediction because of its relationship with a predictor, is critically examined. For a suppressor so defined, formal identities are shown with part, partial, and multiple correlational procedures. It is demonstrated that if maximum prediction…

About 180 Negro Head Start children in Dade County, Florida, were tested (1) to discover if the county's program contributed significantly to language skills, social skills, and self-concept development and (2) to determine if an efficient instrument could be developed to measure self-concept in the disadvantaged child. Pretests and posttests used…

The purposes of the study were to investigate the effects of the combination of a trained teacher and a planned program on the problem solving abilities of mentally handicapped children, to develop measures of verbal problem solving (IDES) and arithmetic understanding (PUT), and to analyze the interrelationships among primary mental abilities and…

To find the concurrent validity of two scholastic aptitude tests when a scholastic achievement test was used as a criterion for use in placement of mentally retarded children, 127 subjects were involved. The California Achievement Test (CAT) was used as a criterion measure, and the Primary Mental Abilities test (PMA) and the Slosson Intelligence…

The study assessed similarities and differences between flexible (capable of performing a greater range of repair tasks) and inflexible radio communications equipment repairmen and workers, and investigated the ability of the empirical procedure to yield a composite technical conceptual structure for the combined groups of workers. Workers were…