The detection of differential item functioning (DIF) is important in psychological and behavioral sciences. Standard DIF detection methods perform an item-by-item test iteratively, often assuming that all items except the one under investigation are DIF-free. This article proposes a Bayesian adaptive Lasso method to detect DIF in graded response…

In the structural equation modeling literature, the normal-distribution-based maximum likelihood (ML) method is most widely used, partly because the resulting estimator is claimed to be asymptotically unbiased and most efficient. However, this may not hold when data deviate from normal distribution. Outlying cases or nonnormally distributed data,…

The authors compare the operating characteristics of the bootstrap-F approach, a direct extension of the work of Berkovits, Hancock, and Nevitt, with Huynh's improved general approximation (IGA) and the Brown-Forsythe (BF) multivariate approach in a mixed repeated measures design when normality and multisample sphericity assumptions do not hold.…

Stereotyped movements displayed by 6 participants and tics displayed by 6 children were evaluated using an antecedent behavioral analysis and a force sensitive platform. We found that tics occurred more often in an alone condition when compared to high preference toy and play conditions, whereas stereotyped movements were more variable across…

This study in the Northern Nigerian educational system tested the hypothesis of British and American studies that academic achievement at primary school is positively associated with extraversion. Contrary to previous studies, the results of this inquiry yielded a significant negative association between extraversion and academic attainment.…

Introduces the inspection-time (IT) measure in psychology, and argues that its much-replicated correlation with intelligence quotient (IQ) and its potential for theoretical tractability has more potential for the understanding of individual differences in cognitive ability than other indices of human information processing. It summarizes studies…

Part two of a seven-section, final report on the Multi-Disciplinary Graduate Program in Educational Research, this document contains discussions of quantification and reason analysis. Quantification is presented as a language consisting of sentences (graphs and tables), words, (classificatory instruments), and grammar (rules for constructing and…

The major objectives of this study were: (1) to determine if there were measurable differences in autonomy between Mexican-American and Negro children, (2) to determine the effects of three different preschool intervention programs upon the development of autonomy in Mexican-American and Negro children, and (3) to determine the relationship…

A methodology for the assessment and prediction of recidivism in terms of degree or extent of environmental deprivation or support is presented. The Environmental Deprivation Scale (EDS) was employed as an objective means of assessing environmental circumstances in a group of recidivists as contrasted with non-recidivists. The EDS consists of a…