Research has shown that educated children and adults have access to two ways of representing numerical information: an approximate number system (ANS) that is present from birth and allows for quick approximations of numbers of objects encountered in one's environment, and an exact number system (ENS) that is acquired through experience and…

The presence of suppression (and multicollinearity) in multiple regression analysis complicates interpretation of predictor-criterion relationships. The mathematical conditions that produce suppression in regression analysis have received considerable attention in the methodological literature but until now nothing in the way of an analytic…

This article focuses on some of the issues that shape understandings of professional practice in the rapidly expanding context of children's centres in England. Drawing on data from an ESRC-funded project exploring practitioners' understandings of quality and success, the perspectives of 115 practitioners working in 11 Sure Start Children's…

Differential responsiveness to intervention programs suggests the inadequacy of a single treatment approach for all children with autism. One method for reducing outcome variability is to identify participant characteristics associated with different outcomes for a specific intervention. In this investigation, an analysis of archival data yielded…

Findings are presented from an ecologically grounded, longitudinal study of 206 urban, ethnic minority adolescents that used hierarchical linear modeling to examine: (1) individual trajectories of change in adolescents' perceptions of general and closest same-sex friendship quality from middle to late adolescence; (2) the effects of gender and…

Recent theoretical advances in working memory guided analyses of cognitive measures in 122 children with dyslexia and their 200 affected biological parents in families with a multigenerational history of dyslexia. Both children and adults were most severely impaired, on average, in three working memory components- phonological word-form storage,…

This article describes cross-cultural research on the relation between how people conceptualize nature and how they act in it. Mental models of nature differ dramatically among populations living in the same area and engaged in similar activities. This has novel implications for environmental decision making and management, including commons…

Examines various language learning background variables in relationship to rate of learning progress through an intensive English program. Findings reveal that entry proficiency variables were most effective when predicting high and low success category, but language learning background variables were most effective when predicting medium success.…

Entrepreneurship courses commonly use various kinds of group work, cooperative learning, study circles and study teams. A major challenge of this pedagogy is the unbiased grading of group members based on the accountability of individual performances. This paper provides an approach to using student peer assessment to provide feedback on…