RESUMO
OBJECTIVES: To examine the effects of demographic variables on temperament and to establish the norms of Korean version of Parental Temperament Questionnaire for Children (K-PTQ). METHODS: The subjects were consisted of 1,168 preschool children who were attending nurseries nationwide in Korea. K-PTQ was completed by the parents of these children and the data were analyzed according to the demographic variables such as age, sex, birth order and residing area. RESULTS: There were significant differences in K-PTQ scores according to sex and age. The result of factor analysis shows that the K-PTQ has a three-factor structure, representing 'Approach/Withdrawal and Adaptability', 'Intensity of Reaction and Distractibility', and 'Activity and Persistence'. This factor structure coincides with Thomas and Chess's three-factor model. CONCLUSION: Norms for K-PTQ were established according to sex and age and this will be useful for studying Korean children's temperament.