"Science and Engineering Indicators" ("Indicators") is a biennial congressionally mandated report that provides high-quality quantitative information on the U.S. and international science and engineering enterprise. The report employs a variety of presentation styles--such as narrative text, data tables and figures--to make the…

This article reports one- and two-year follow-up studies of 67 phobic children who were between the ages of 6 and 15 at intake. (Author)

This study involved an investigation of the use of Pearson r, tetrachoric r, and Kendall Tau-B coefficients as measures of association for the incomplete principal components analysis of simulated Likert scale attitudinal data, based on a known factor pattern and possessing different types of severe departures from normality. (Author)

The researchers of this article investigated a relationship between appearance and self concept that has had theoretical support but little research support. (Author/RK)

Contrary to previous experiments which found recall with blocked spacing always superior to recall with random" spacings, these experiments found that total recall was a function of two independent factors: (a) category representation, and (b) items per category represented (IPC). Both factors are dependent upon within-category spacing.…

The present paper called attention to the difference between discrimination among individuals and discrimination among groups and suggested that the intraclass correlation coefficient should be used in the process of item selection whenever one is interested in discrimination among groups. (Author)

This study was designed to test the hypothesis that a semantic differential instrument can serve as a functional affective measuring device. (Author)

Article is addressed to the differential susceptibility of Quantitative Comparisons, Data Sufficiency, and Regular Mathematics aptitude test items to an intensive program of short term instruction. Of secondary interest is the relative susceptibility of geometry and nongeometry items within these three formats. (Author/RK)

The purpose of the present study was to determine whether a "natural" four-alternative multiple choice item represents the same psychological task as a five-choice item rescored as a four-choice item. (Author)

Two hundred seventh grade Ss were administered a paired comparison scale for the purpose of predicting reinforcer effectiveness of fifteen stimuli. (Authors)

The National Assessment of Educational Progress (NAEP) provides data about what children know and can do with the goal of using this information to improve education. This book contains interpretive reports based on results from the mathematics assessments conducted by the NAEP regarding: (1) the cognitive performance of students at grades 4, 8,…

Heart rate indexes of reaction time (RT) were investigated in male college students. (Author)

A principal purpose of this paper is to report systematic data in support of an hypothesized association between noise stress and subsequent behavior. Penetration of traffic sounds into the home was considered as it impaired the child's ability to learn verbal skills. (Author/RK)

This study reports various aspects of the analyses carried out on the longitudinal data reported in a previous study (PS 007 345) for determining the general growth patterns and growth velocity of mental and motor development. Preliminary analyses focused on the selection of the growth curve, its evaluation in the 208 individual cases, and the…