The purpose of this paper is to demonstrate how many more subjects are required to achieve equal power when testing certain hypotheses concerning proportions if the randomized response technique is employed for estimating a population proportion instead of the conventional technique. (Author)

The Shine-Bower error term is used to form approximate F ratios for testing various effects in the Shine-Bower single-subject ANOVA and the Shine Combined ANOVA. Results demonstrate the utility of these F ratios with respect to the probability of a type I error. (Author/JKS)

A FORTRAN program is provided for calculating the power of statistical tests based on the chi-square distribution. The program produces approximations to the exact probabilities obtained from the noncentral chi-square distribution. The calculation of the noncentrality parameter is discussed for tests of independence and goodness of fit.…

Fifteen examples using different formulas for calculating degrees of freedom for power analysis of multiple regression designs worked out by Cohen are presented, along with a more general formula for calculating such degrees of freedom. (Author/JKS)

A problem in analysis of variance is that after rejection of the overall hypothesis, no contrasts of interest are found to be significant. A procedure for determining the contrast of significance is outlined, and the relationship between the "most significant" contrast and the overall test is shown. (Author/JKS)

Details are given for the use of the mixed effects multivariate analysis of variance table provided by the BMD12V computer program to compute raw generalized variances and hence the U and F statistics for the mixed effects model. (Author/JKS)

A simple rationale for Scheffe's Method and Gabriel's Simultaneous Test Procedure is presented. Examples of both methods are provided. (Author)

The hypothesis that two variables have a perfect disattenuated correlation and hence measure the same trait, except for errors of measurement, is discussed. Equivalently, the underlying variables, the true scores, are related linearly. It is shown that previously proposed ad hoc tests are, in fact, likelihood ratio tests. (Author/JKS)

This paper describes an exact small sample test, and provides a table of critical values for an approximate large sample test, to determine if a sample of Likert-Type ratings indicates significant agreement or disagreement in a population of such ratings. (Author)

The behaviors for which juvenile females are placed in court custody are most frequently related to sexual delinquency, "incorrigibility", and running away. Psychologically, these behaviors can be viewed as acting on impulses in ways prohibited by prevailing social norms. Examines the possibility that female delinquency represents an…

It appears that contingent reinforcement may have an effect upon the intelligence test performance of black adults as evidenced by the consistent trend of the IQ scores in the direction of the proposed hypothesis. However, the primary analysis of the data revealed no statistically significant differences among treatment groups. (Author)

In a recently reported study, the functional components of imagery and vocalization strategies in children's verbal discrimination learning were examined, following the combined experimental/correlational logic of Underwood. The present research extends those results to a strategy that (unlike imagery and vocalization) has a positive influence on…

Words presented with regular acoustic onsets are not "perceptually" regular. The requirements for perceived regularity were investigated, and the "perceptual center" (P-center) of a word was defined as its psychological moment of occurrence. (Editor)

In this research subjects are asked to justify three common erroneous solutions and the correct solution, all of which purport to be the "correct solution". It was predicted that the subjects would give reasons supporting any given solution, and indicate a high degree of confidence in the correctness of their justifications. (Author/RK)

It is pointed out that interpretation of learning set data will be easier and more informative if one uses a "first-order" problem, that is, one which can be solved on the first trial at the end of training. (Editor)