A procedure for estimating the degree to which a subtest uniquely contributes to total test performance is presented and discussed. Uniqueness analysis may be appropriately applied to any composite measurement instrument such as a multipart test or a multitest battery to assess the unique contribution of each component to the total test. The…

Two independent studies were conducted to investigate possible differences in General Aptitude Test Battery (GATB) aptitude M resulting from the use of different test equipment (wooden vs. plastic apparatus.) As part of a ten-year longitudinal study of Vocational Development being conducted in the Department of Vocational Education at The…

Male and female enlistees were compared on the basis of their performance on the Armed Services Vocational Aptitude Battery. Mean Aptitude Index scores were compared for male and female enlistees on the original testing and on retest. Males scored higher on mechanical and electronics, and females scored higher on administrative and general. Both…

Major tenets summarizing Jensen's two-level theory of mental abilities were examined in a static-group comparison, correlational study. Caucasian siblings in grades one through four from low- and middle-socioeconomic (SES) populations were administered five Level I (associative learning ability) tasks and Raven's Progressive Matrices. Consistent…

Multiple regression equations predicting first semester grade point average (GPA) from high school percentile rank (HSPR) and Composite score on the American College Test (ACT:C) were examined for five successive fall freshman classes (1965-1969) at the University of Illinois. Slopes were significantly different among the five equations. Further…

An investigation was conducted to determine the effects of response-category weighting and item weighting on reliability and predictive validity. Response-category weighting refers to scoring in which, for each category (including omit and "not read"), a weight is assigned that is proportional to the mean criterion score of examinees selecting…

Evidence on how the psychometric properties of verbal and quantitative academic aptitude tests are affected when item options are weighted using rather simple conceptual procedures is presented. This is discussed in connection with the scoring methods used on the Graduate Record Examinations. (DG)

Administers an experimental college version of the Musical Aptitude Profile (CMAP) and 2 motivation measures to 187 nonmusic majors in a music appreciation course. Eliminates CMAP results from analysis resulting from low reliability. Includes data table that were significantly related. (NL)

According to a survey report of the Student Guidance Center at the Seoul National University, approximately thirty percent of the freshmen expressed the desire to be transferred to other departments. It was further reported that more than forty percent of them list the unsuitability of their academic departments to their interests and aptitudes as…

The selection of an appropriate test battery is based on its content and applicability to the vocational trainee population. This report describes the testing of a national sample of U.S. high school students with an established version of Armed Services Vocational Aptitude Battery (ASVAB), and a new, enlarged version of the same test battery.…

A nontechnical approach to statistics is presented. The examples and illustrations have been drawn from the classroom and the needs of teachers who wish to measure and understand the progress of their pupils. The areas covered include the following topics: (1) different forms of average, middle value, dispersion of data around the average, and the…

This book is designed to introduce education students to the essentials of measurement and evaluation. It focuses on the topics essential to effective classroom teaching and treats these topics in a way that emphasizes the human context that surrounds and guides their use. The book is organized into three main sections. The first is understanding…

Validation of an Air Force vocational interest inventory in the enlisted force was conducted to develop improved job placement techniques with a view toward practical application of results during initial counseling and job placement of enlisted personnel. The Vocational Interest-Career Examination (VOICE) was administered to 18,000 recruits…

COUNSELORS OFTEN ADMINISTER TESTS OF QUESTIONABLE VALIDITY. IN RELIABILITY STUDIES, EVERY PRECAUTION IS TAKEN TO STABILIZE THE STIMULUS SITUATION. IN ASSESSING VALIDITY, CONCERN CENTERS ON BEHAVIOR UNDER DIFFERENT STIMULUS CONDITIONS. CRONBACH'S THEORETICAL LIMIT FOR A VALIDITY COEFFICIENT OF A TEST IS THE SQUARE ROOT OF THE RELIABILITY…