Prescriptions for improving student understanding and problem-solving performance related to transmission genetics are discussed. Research on novice/expert problem-solving in transmission genetics is reviewed. (Author/CW)

A stratified random sample of 82 subjects, from 4 to 25 years of age, was used to examine relationships between intransitivity of paired-comparison relationships and age of subjects. Results indicate a floor level, at 6 to 7 years of age, below which response intransitivity increases significantly. (TJH)

Current efforts to promote issues-based education in elementary and secondary schools will not succeed unless educators know what issues-based education is, why it is an important part of education, and how to include it in the curriculum. (Author)

Discusses developmentally appropriate activities for teaching counting skills for kindergarten and early first-grade programs. Describes four activities: (1) counting on; (2) counting back; (3) auditory patterning; and (4) visual patterning based on the 10-frame. (YP)

The purpose of this study was to develop a procedure for the evaluation of M-demand of chemistry problems. It was shown that dimensional analysis upon the Neo-Piagetian theory of Pascual-Leone could help science teachers to understand the epistemological basis of their discipline. (CW)

Findings are examined from studies published from 1980 to the present concerning the effects of peer tutoring on mathematics performance. Findings indicate the effectiveness of peer tutoring in promoting significant cognitive gains for both the tutor and the tutee with populations of low achievers, mildly handicapped, or socially disadvantaged…

Challenges the view that the cognitive-developmental level of preschool children prevents them from attaining gender constancy. Reviews shortcomings in procedures previously used to assess gender constancy. Reports on a study which uses a new measure of gender constancy and a new test of children's genital knowledge. (PCB)

Infants' habituation and mothers' encouragement of attention were assessed at 5 months. Toddlers' language comprehension, language production, and pretense play, and mothers' encouragement of attention, were assessed at 13 months. Examined the contributions of infant habituation and maternal stimulation to toddlers' cognitive abilities. (PCB)

The results of survey of secondary school biology students used to access misconceptions about cells are presented. A distinction between conceptions, misconceptions, and nonconceptions is drawn in terms of secondary school biology concepts. The resilience of misconceptions is discussed. (CW)

Investigated 60 parents' perceptions of influence of their eldest child's (aged 4, 7, or 10 years) development and the extent to which these perceptions varied as a function of five factors. Cognitive and social development were significant variables for beliefs about influence. (RJC)

Investigates 14-year-old students' ability to recognize argumentation without having systematic instruction; and whether the identification of argumentation is an independent skill. Finds that after a 20-minute explanation, a large proportion of 14-year-olds could not identify simple argumentation. Concludes that identifying argumentation is a…

The development and use of educational software for children with severe learning problems are described. The software deals with common conceptual, communicative, and problem-solving problems in this population. It is argued that appropriately structured computer-mediated interaction can result in development and expression of cognitive skills…

The influence of cultural practices on the cognitive development of largely unschooled children was investigated among 23 candy sellers and matched non-vendors between 10- and 12-years-old who resided in northeast Brazil. Findings are interpreted as supporting a model of cognitive development in which children construct novel understandings while…

Nine generalizations on optimal age, first language cognitive development, and second language academic achievement are proposed in order to expand the current theoretical base in second language (L2) acquisition. These generalizations summarize research on L2 acquisition for schooling purposes. (57 references) (Author/VWL)

Investigated egocentricity and ascriptions of knowledge to others in 45 children of 3-6 years. Six-year-olds were better than younger children at assessing the other's knowledge. Subjects were better at assessing the other's knowledge when their own access and knowledge were identical. (RJC)