This research investigates how individual differences in strategic abilities affect problem solving and, more particularly, the extent to which hypothesis-generating skills predict effective hypothesis testing. Additional questions concerned the effects of content and timing of instructional advice on children's problem-solving strategies, and…

The study investigated statistically significant correlations between levels of test anxiety and socioeconomic status among college sophomores and juniors. The Anxiety Scale (Alpert and Haber) was administered to students in an educational psychology course. Administrations were conducted at a neutral time, 45 days prior to the final exam, and…

Analysis of current methods for achieving compatibility or convertibility between two or more indexing languages draws attention to the need for a switching language to establish equivalency between concepts, not terms. In order to examine the assumption of the conceptual equivalency of identical terms in the indexing languages of related subject…

This paper examined the rank transformation approach to analysis of variance as a solution to the Behrens-Fisher problem. Using simulation methodology four parameters were manipulated for the two group design: (1) ratio of population variances; (2) distribution form; (3) sample size and (4) population mean difference. The results indicated that…

The testing of research hypotheses is directly comparable to the dichotomous decision-making of medical diagnosis or jury trials--not ill/ill, or innocent/guilty decisions. There are costs in both kinds of error, type I errors of falsely rejecting a null hypothesis or type II errors of falsely rejecting an alternative hypothesis. It is important…

A probabilistic hypothesis testing procedure to assess the fit of hypothesized hierarchical structures for test item data is discussed. Statistical procedures are presented which are useful for evaluating the fit of data of a certain class of probabilistic models. These models apply to sets of dichotomous (O,1) responses for which there are…

To test the effect of library instruction on learning basic knowledge and skills in using reference tools, 33 Ball State University students received such instruction in a course on information resources in libraries. In control groups from basic literature courses, 39 students received course-related library instruction and 81 students received…

Results support Sherman's hypothesis that sex differences in tests of field independence, such as Witkin's Rod-and-Frame Test and Embedded Figures Tests, are artifacts of the well-known sex differences in space perception and are therefore not evidence that females are less analytical than males. (Author/BJG)

Simplicity and flexibility of the full rank linear model motivated this paper which introduces researchers to the theory necessary to understand the model and apply the theory in the analysis of some standard fixed effects experimental designs. The theory and examples should help researchers use the model as an experimental tool and a model for…

This paper makes six assertions concerning the artist as experimenter and the means by which artists progress from experiment to experiment. (1) The family resemblances typically cited between the arts and the sciences are trivial, tend to be wish-fulfilling analyses of the common logic of art and science, and promise more than they can deliver.…

An increase in reciprocity of interpersonal attraction during the early acquaintance period followed by continuing social reciprocity are propositions that are central principles of several social psychological viewpoints. However, there is little empirical evidence of increasing reciprocity of interpersonal attraction over time. Two potential…

The similarities between television viewing and fantasy activity (daydreaming, reverie, mind-wandering, internal dialogue) more than warrant the building of a theoretical construct, especially in the context of recent empirical research on television viewing consequences. A construct of the television viewing process, based on cognitive theories…

Arguments have recently been put forth that standard textbook procedures for determining the sample size necessary to achieve a certain level of power in a completely randomized design are incorrect when the dependent variable is fallible because they ignore measurement error. In fact, however, there are several correct procedures, one of which is…

The purpose of this study was to investigate in children from ages 4 to 10 the development of logical propositions and to determine whether or not there is a developmental sequence in children's ability to supply missing elements of syllogisms. A specially designed instrument, consisting of an equal number of items with missing major premises,…

The statistical parallelism of a pair of tests equated by the P-value method was investigated, as well as the relationship between their raw scores and scores transformed by linear equating. Data were obtained from eight sections of the 1980 New Jersey Minimum Basic Skills Program; specifically, the reading and mathematics tests for each of grades…