Use of the usual bivariate correction for attenuation with more than two variables presents two statistical problems. This pairwise method may produce a covariance matrix which is not at least positive semi-definite, and the bivariate procedure does not consider the possible influences of correlated errors among the variables. The method described…

Ways are suggested in which validation studies may be carried out by personnel workers who use tests in selection and placement. The correlational techniques discussed are the product-moment correlation coefficient, biserial correlation coefficient, tetrachoric coefficient of correlation. The summarizing techniques (a term used to refer to methods…

Variance reduction analysis is a simple method for determining the effect of inequality of cell size on analysis of variance calculations. The suggested procedure has three steps. (Author/CK)

In 27 preschoolers observed social activity was significantly and positively correlated with physical, verbal, direct, and indirect aggression in girls (physical and direct aggression, p .05; verbal and indirect aggression, p .01), but negatively correlated with all but verbal aggression in boys (all p's .01). Boys had high physical aggression…

The ability to resist distraction is an important requirement for air traffic controllers. The study examined the relationship between performance on the Stroop color-word interference test (a suggested measure of distraction susceptibility) and impairment under auditory distraction on a task requiring the subject to generate random sequences of…

Research literature regarding the aptitude treatment interaction (ATI) model of research is reviewed, and arguments for and against the use of the model are described. The purpose of the model is to allow a combination of desired properties of experimental and correlational methods. It yields disordinal interactions when experimental situations…

The primary purpose of the present study was to investigate the appropriateness of several tests of significance for use with interrupted time series data. The second purpose was to determine what effect the violation of the assumption of uncorrelated error would have on the three tests of significance. The three tests were the Mood test,…

Testing the hypothesis that socioeconomic status (SES) is related to altruistic behavior, 466 respondents derived from 4,799 households in rural Western Colorado (Woodland Park, Gunnison City, and Durango) were contacted to determine the degree of voluntary basement sharing that might be expected in the event of a nuclear crisis. Respondents were…

Content validity is concerned with three components: (1) the job content; (2) the test content, and (3) the strength of the relationship between the two. A content validation study, to be considered adequate and defensible should include at least the following four procedures: (1) A thorough and accurate job analysis (to define the job content);…

Using a rotated varimax solution based on high school juniors, factor scores on the Vocational Interest Inventory were computed for 300 counseling clients. These factor scores were correlated with the 6 General Theme, 23 Basic Interest, and l24 Occupational Scales to the Strong-Campbell Interest Inventory. Based on the strength and direction of…

This study provides data that concern the relationships among the usual clinical approach to memory measurement and results from several standard memory tests. (Author)

A procedure for estimating the reliability of a factorially complex composite is considered. An application of its use with Scholastic Aptitude Test data is provided. (Author/JKS)

The General Education Performance Index (GEPI) is a comparatively short test covering the same content as the General Educational Development Test (GED), which takes ten hours to administer. Correlations of the subtests of the GEPI with the GED ranged from .28 to .57. (JKS)

The Personal Orientation Dimensions scale, a refinement of the Personal Orientation Inventory, is investigated. Results support the concurrent validity of the Personal Orientation Dimensions scale, and the construct validity of both scales. (JKS)

Utilizing data from 81 adult learners attending 6 different professional education courses in the Faculty of Education at Brandon University, this study attempts to identify: major sources of stimuli in the instructional setting that elicit anxiety; changes of anxiety level through the entire course period; and potent factors that either bring…