The present study used questionnaire method to investigate the influence of parental warmth on adolescents' gratitude as well as the mediating effect of responsibility and the belief in a just world among 748 high school students. Results showed that:(1) Parental warmth could significantly positively predict the adolescents' gratitude;(2) After controlling for the gender,age and grade,responsibility and belief in a just world partly mediated the relationship between parental warmth and adolescents' gratitude respectively. It indicated tha...