Meta-analyses of the hypotheses that relationships exist between play and problem solving, and between play and creativity, were conducted. The data set for the meta-analyses included studies designed to investigate the relationship between play and fluency or originality, or between play and problem-solving behavior. The meta-analyses of…

This study tested the hypothesis that measured aptitudes and self-ratings of these same aptitudes reflect a common domain of psychometric behavior. Male and female applicants for vocational guidance completed a self-rating scale and then the General Aptitude Test Battery (GATB). The self-rating scale contained six vocational/educational aptitudes.…

The position of the "purists" who insist on limiting data to ordinal analysis is contrasted with the "pragmatists" who treat data as interval. (Author)

Relationships between educators' innovation-adoption behavior and five attributes of innovation (relative advantage, compatibility, complexity, trialability, observability) were examined. The attributes, developed by Rogers and Shoemaker, emerged from research in disciplines such as sociology and anthropology, and the present investigation was…

Four different extensions to McNemar's problem concerning the hypothesis of equal probabilities for the unlike pairs of correlated binary variables are considered, each for testing simultaneous equality of proportions of unlike pairs in c independent populations of correlated binary variables, but each under different assumptions and/or additional…

A method of applying the discriminant function to correlated samples was discussed for the researcher interested in utilizing multivariate statistics to pre-post data. By finding the linear combination that maximizes differences in the groups, the t-statistic can be computed for correlated samples. (Author)

Supported by research grants MH-07003 and MH-11521 from the National Institute of Mental Health, U.S. Public Health Service.

PRE-EXISTING ASSOCIATION BETWEEN WORDS WAS HYPOTHESIZED TO BE A VARIABLE INFLUENCING CHOICE OF WORDS DURING THE PROCESS OF SENTENCE CONSTRUCTION. IN THE FIRST EXPERIMENT, 32 SS (SUBJECTS) ENGAGED IN A PACED-RECALL TASK. MATERIALS WERE SETS OF THREE SENTENCES WHICH VARIED ONLY IN TWO NON-ASSOCIATED EMBEDDED ADJECTIVES WHICH COULD BE INTERCHANGED…

The power of a statistical test is, in part, a function of the reliability of the dependable variable being analyzed. The substitution of sigma square divided by the reliability coefficient for sigma is proposed. This enables the researcher to incorporate dependent variable reliability information when determining the sample size required for a…

Two well known directional (one-tailed) tests of significance, mean difference and correlation coefficient, are presented within the multiple linear regression framework. Adjustments on the computed probability level are indicated. The case for a directional interaction research hypothesis is defended. Conservative adjustments on the computed…

The primary purpose of the present study was to investigate empirically the effect of multiple hypothesis testing on error rates in factorial ANOVA designs under a variety of controlled conditions. The per comparison, per experiment, and experimentwise error rates were investigated for three hypothesis testing procedures. The specific conditions…

Basic to many psychological investigations is the question of agreement between observers who independently categorize people. Several recent studies have proposed measures of agreement when a set of nominal scale categories have been pre-defined and imposed on both observers. This study, in contrast, developes a measure of agreement for settings…

This content analysis examines social values in the tenth grade literature anthologies of four major publishers. Basic hypotheses deal with interrelationships of narrative sequence, thematic development, and world view. It was hypothesized that fiction would follow a predictable sequence and main characters would be aided by an outside force or…