THE MINNEAPOLIS REHABILITATION CENTER (MRC) STUDIED MINNESOTA MULTIPHASIC PERSONALITY INVENTORY (MMPI) SCORES TO SEE IF THEY RELIABLY PREDICTED EMPLOYMENT OUTCOME AND TREATMENT EFFECTS. IT WAS DEEMED IMPORTANT FOR AGENCIES TO HAVE A METHOD OF DIAGNOSING PROBABLE RETURN-TO-WORK CLIENTS BEFORE SELECTING THOSE FOR REHABILITATION. A METHOD OF…

The question of whether or not block size has an effect on the statistical analysis of data is examined through a study involving a total of 10,000 simulated experiments. Results indicate that the inflation in Type 1 error rate is much higher than is reported in the literature when using CE as the independent variable. There is little or no…

Foreign language tests fall into two classes, according to their purposes. The first class, tests used for the control of instruction, may be achievement or diagnostic tests. The second class of tests, used in the control of a person's career, may be concerned with what the subject can do, or what he should be able to do in the future. The…

Results from classical power analysis (Brewer, 1972) suggest that a researcher should not set a=p (when p is less than a) in a posteriori fashion when a study yields statistically significant results because of a resulting decrease in power. The purpose of the present report is to use Bayesian theory in examining the validity of this…

The Cognitive Vocational Maturity Test (CVMT) was constructed to measure knowledge and abilities dealing with the characteristics and requirements of a wide range of occupations. Fifteen cognitive vocational maturity areas were identified; the present form of the test consists of 120 multiple choice items, whose reading grade levels range from 1.4…

The current criterion for prediction of performance of student naval aviators is the dichotomy of success versus failure in undergraduate flight training. This criterion has enabled the naval air training command to make reasonable estimates of the probability of an applicant or student completing flight training. However, a costly attrition…

An index that reflects the accuracy of selection associated with a predictive validity of "r" is presented. Based on Sheppard's thoerem on median dichotomies, it is a measure of improvement over chance assignment to "accept" (or "reject"). Because the index is a measure of the accuracy of this assignment, rather than…

An empirical comparison of three proposed indices of predictor variable potency is presented. These indices are: (1) the scaled weights of the first Fisher-type discriminant function, (2) the total group estimates of the correlations between each predictor variable and the first Fisher-type function, and (3) the within-groups estimates of the…

Investigates the question of under what conditions can one infer that some observed relationship between two empirical variables reflects more than that they are both indicants of the same construct. (RC)

A formula is derived for ascertaining factor scores for the factor analytic method: Little Jiffy, Mark IV. This formula is then employed to derive a second formula giving an exact determination of the generalized Kuder-Richardson estimate of the reliability of scores on a Little Jiffy factor. (Author/JKS)

This study assessed the validity of striking a Bobo clown as a measure of aggression by correlating the rate of this behavior with peer ratings, teacher ratings, and self-ratings of aggressiveness in a preschool. (Author/JMB)

Discusses current methods, problems, and results of psychological treatment for alcohol abuse, including alcoholism. Addresses external and internal validity problems specific to issues regarding who is treated for alcohol problems, and treatment and patient factors that predict response to alcoholism treatment. Reviews current data on…