乳幼児期における行動発達に関与する因子の検討―性差について―

抄録

This paper discusses similarities and differences of behavioral development between boys and girls in preschool years. The samples were selected from children who were born in 1972 within the jurisdiction of K Health Center in Tokyo. They have been observed since they were three months of age. The data were analyzed when the infants were 3, 4, 6 and 9 months of age, and when they were 1, 2, 3 and 4 years of age respectively. The results are as follows: 1) Sex differences were found in some items of behavioral development, as well as habits and developmental problems. 2) The differences, which are significantly related to the mother's educational level, were found in some developmental areas, such as language and fine motor. (adaptive development) 3) Language developmental items at two years of age were related to both the child's sex and the mother's education. 4) It was found that the mothers' perception of child-rearing practices changed as her child grew. From these results, it is suggested that not only biological factors, but also sociocultural factors, which direct the child's behavior through child - rearing practice, should be considered in understanding differences of behavior between boys and girls. This paper discusses similarities and differences of behavioral development between boys and girls in preschool years. The samples were selected from children who were born in 1972 within the jurisdiction of K Health Center in Tokyo. They have been observed since they were three months of age. The data were analyzed when the infants were 3, 4, 6 and 9 months of age, and when they were 1, 2, 3 and 4 years of age respectively. The results are as follows: 1) Sex differences were found in some items of behavioral development, as well as habits and developmental problems. 2) The differences, which are significantly related to the mother's educational level, were found in some developmental areas, such as language and fine motor. (adaptive development) 3) Language developmental items at two years of age were related to both the child's sex and the mother's education. 4) It was found that the mothers' perception of child-rearing practices changed as her child grew. From these results, it is suggested that not only biological factors, but also sociocultural factors, which direct the child's behavior through child - rearing practice, should be considered in understanding differences of behavior between boys