The purpose of this study was to identify the characteristics of a representative sample of single-case designs that appear in the published literature. The study located, digitized, and coded all 809 single-case designs appearing in 113 studies in the year 2008 in 21 journals in a variety of fields in psychology and education. Coded variables…

The current study proposes a new procedure for separately estimating slope change and level change between two adjacent phases in single-case designs. The procedure eliminates baseline trend from the whole data series before assessing treatment effectiveness. The steps necessary to obtain the estimates are presented in detail, explained, and…

Responds to the comments of LoSchiavo F. M. and Shatz M. A.; Webster G. D., Nichols A. L., and Schember T. O.; Stroebe W. and Nijstad B.; and Haeffel et al. on the author's original article regarding the assertion that American psychology focuses too narrowly on Americans while neglecting the other 95% of the world's population. The author…

The present experiment examined the choice behavior of humans during the learning of a reversal (R) shift as an empirical test of attentional explanations of the overtraining reversal effect. (Author/RK)

"Five roles are considered by which systematic, quantified field research can augment controlled laboratory experimentation in terms of increasing the validity of laboratory studies." Advocates that comparative psychologists should "take more initiative in designing, executing, and interpreting our experiments with regard to the natural history of…

Alternative designs for educational research are explored to improve the external validity of educational research and broaden its scope to include not only the systematic experiments that identify psychological mechanisms but also representative designs that match the complexity of learning behavior in school. (JH)

Purpose: The purpose of this study was to review research published by Educational Administration Quarterly (EAQ) during the past 10 years to determine if confidence intervals and effect sizes were being reported as recommended by the American Psychological Association (APA) Publication Manual. Research Design: The author examined 49 volumes of…

Critical features of sound observational studies fall under three categories: the sampling framework; the theoretical model; and the statistical procedure. If the methodology for explanatory, rather than descriptive, observational studies can be applied within these categories, more consistent, convincing, useful explanations of educational…

Research strategies used to study human aggression include laboratory study, experimental simulation, field experiment, field study, judgment task, sample survey, and less empirical strategies such as computer simulations and formal theory. The context of these strategies can be classified as either contrived, natural, or irrelevant. Major issues…

The problems and rewards of conducting contemporary historical research are related in the light of the author's experiences in preparing an Ed.D. dissertation analyzing Malcolm S. Knowles' contributions to and influence on the field of adult education. Given its contemporaneous nature, the author terms the study accurate but inconclusive. The…

298 EDUCATIONAL AND PSYCHOLOGICAL RESEARCH PAPERS PUBLISHED IN 5 JOURNALS DURING 1966-67 WERE CLASSIFIED ON THE BASIS OF SPONSORSHIP, AUTHORS' GENERAL INTENTIONS, DESIGN, ASSUMPTIONS, AND ANALYSIS. ADVANCES IN STATISTICAL THEORY (INCLUDING WORK ON GENERAL ANALYSIS OF VARIANCE DESIGNS, HYPOTHESIS TESTING IN FACTOR ANALYSIS, MULTIVARIATE ANALYSIS,…

Describes a study using self-report measures of students' responses to auditory and visual stimuli to measure distractibility in task performance among 224 Canadian undergraduates. Findings show the absence of any link between self-reported distractibility and actual performance. Study shows correlations between personality type and…