It is demonstrated that the popular three-parameter logistic model can lead to markedly inaccurate individual ability level estimates for mixture populations. A theoretically and empirically important setting is initially considered where (a) in one of two subpopulations (latent classes) the two-parameter logistic model holds for each item in a…

In the behavioral sciences, a popular approach to describe and predict behavior is cognitive modeling with adjustable parameters (i.e., which can be fitted to data). Modeling with adjustable parameters allows, among other things, measuring differences between people. At the same time, parameter estimation also bears the risk of overfitting. Are…

A reanalysis of recent clinical research suggests that three different neural processes or brain mechanisms may underlie the regulation of emotion: (1) contralateral disinhibition of cortical centers; (2) ipsilateral disinhibition of subcortical centers; and (3) excitation of specific subcortical or neocortical centers. (MDM)

Shows that an individual's general disposition, either positive or negative, averaged with the weight of stimulus traits presented affects impression formation. Graph and bibliography. (RW)

This essay discusses the evaluation of the relationship between the nervous system and emotion regulation, introducing vagal tone as a measurable organismic variable that contributes to individual and developmental differences in the expression and regulation of emotion. (MDM)

Maintains that (1) research questions must address intra- and extraorganism contextual relations and must be multidisciplinary in scope; (2) research must be sensitive to contextual variability and individual differences; and (3) scholars must develop empirically generative models linking the development of human beings with changing contexts. (BC)

Extending the work of behavioral scientist Urie Bronfenbrenner on the social and contextual factors influencing human development, this collection of essays, from scholars in a range of disciplines, shows how Bronfenbrenner's ecological theory and research have transformed the way many social and behavioral scientists approach, think about, and…

A description is provided of a computer-based simulation of an instructional system which adapts the learning environment to the individual's unique attributes for processing information and for being motivated. The main purposes of the simulation are: 1) to introduce, as attributes for individualizing instruction, information processing variables…

"Compensatory" and "spillover" models have described the two basic relationships individuals form between work and nonwork experiences. The assembly line worker seeking compensation in nonwork activities for deadening work exemplifies the first. A person whose nonwork activities are an extension of work experiences exemplifies the second. The…