Examined the effects of stress related to a competitive arithmetic test on a group of 301 children and young adults in 7 age cohorts ranging from 7 to 20 years by measuring changes in heart rate. Discovered some age and sex differences, and found that the oldest group had the greatest increase in heart rate. (MDM)

Data from the Japanese standardization of the Wechsler Preschool and Primary Scale for Intelligence were used to analyze the structure of abilities of Japanese children in terms of the Burt-Vernon hierarchical model of intelligence. It was suggested that the pattern of cognitive strengths and weaknesses that emerged would help clarify a number of…

We examined the relationship between parents' behaviour and children's use of simple arithmetic strategies while playing a board game in contrast to solving arithmetic problems. In a microgenetic study spanning 3 weeks, 5-year-old children who were just beginning kindergarten played a modified game of "Chutes and Ladders" with one of…