We conducted a questionnaire survey using a cross-sectional sample of early and middle adolescents aged 10-15 (n = 351) in order to investigate relationships between temperament, metacognition, and frames of reference in behaviors in public situations. The sample was divided into two groups by age (ear group: 10-12; middle-adolescence group: 13-15) and were analyzed by Multiple Group Structural Equation Modeling. Explanatory variables were four components of temperament [effortful control (EfC), affiliativeness (Afil), surgency (Sur), and negative affect (NgA)] and metacognition. Objective variables were three components of frames of reference in behaviors in public situations [egocentrism (Ego), neighborhood evaluation (Nei), and public values (Pub)]. In both age groups, EfC had a negative effect on Ego, and Sur had a negative effect on Nei. However, only in the middle-adolescence group did Afil and NgA have significant effects on Pub. Meanwhile, metacognition in the ear group had a positive effect on Ego and Nei, but these relations disappeared in the middle-adolescence group, and only in the middle-adolescence group did metacognition have a positive effect on Pub. We discuss frames of reference in behaviors in public situations from the viewpoint of the development of social cognition in early and middle adolescence in relation to temperament and metacognition.