A path model was used to test the unique and interactive effects of cognitive and motivational variables when learning in a supportive online learning system, Collaborative Inquiry System (CIS). In this student-centered learning environment, students interact with computer simulations and are assisted by online scaffolds intended to help them…

Given the relatively high intercorrelations observed between mathematics achievement, reading achievement, and cognitive ability, it has recently been claimed that student assessment studies (e.g., TIMSS, PISA) and intelligence tests measure a single cognitive ability that is practically identical to general intelligence. The present article uses…

Using data from the Westinghouse Learning Corporation Study, the effect of the Head Start Program on cognitive achievement in preschool children is examined. The use of statistical models to evaluate programs which non randomly assign children to "treatment" and "control" groups is discussed. Necessary conditions for unbiased…

To investigate the impact which continuity in children's programs might have for children's longterm cognitive and noncognitive development, effects of a prekindergarten (PreK) program on children's performance was measured using two cognitive measures at the end of the subjects' first grade year. Staff development activities in selected districts…

In light of debate about the developmentally inappropriate and culturally questionable use of standardized testing for placement of preschool children, alternative approaches to screening and assessment are required. The impact of a Head Start program upon children must involve documentation of physical and mental health, speech, hearing, vision,…