Based on the analysis of available research on students' alternative conceptions about the particulate nature of matter, we identified basic implicit assumptions that seem to constrain students' ideas and reasoning on this topic at various learning stages. Although many of these assumptions are interrelated, some of them seem to change or…

Describes a research project with teen-aged students in Denmark to illustrate the cognitive processes involved in learning computer programing and discusses the difficulties students encounter when learning to program. The use of home computers is briefly examined in the context of the need for human interaction in learning programing. (Author/LRW)

Examines effectiveness of a school-based, cognitive stress management intervention program. Participating secondary school students showed significant improvement on a variety of emotional arousal measures. Cognitive restructuring training resulted in improvements on self-report measures of trait anxiety, self-esteem, depression, and trait anger.…

Compared 16 fourth- and fifth-grade boys who participated in Discovery, developmental program in which students with history of inappropriate classroom behaviors acted as peer tutors for kindergarten students, to 16 control participants. Found no significant increase in moral development among Discovery participants but did find significant…