Abstract-The main aim of this study is to identify whether or not the social behaviors such Prosociality, Shyness and Aggression of children, living in a stable life period families, are stable from age 6 to age 11 in a sample of Turkish children. In total, 47 children participated in the study, of whom 24 male and 23 female lived in families in Muş Province, Turkey. Teacher Assessment of Social Behaviors Scale were applied to the same group four times (at ages 6, 7, 9, 11) in five years. The children in this sample were assessed initially at the end of their final preschool year (age 6) and were reassessed at the end of the first (age 7), third (age 9) and fifth grade (age 11) of elementary school. All assessments were conducted in May. In conclusion, social behavior was found to be stable for 55% prosocial behaviors, 31% Shynese behavior and 79% for aggressive behavior as results of regression analysis. These findings support the argument that aggression and prosocial behaviors follows a stable course from age 6-11 age onwards. Repeated measures ANOVA with a Greenhouse-Geisser correction determined that mean not differed statistically significantly between aggression's (F(2.19, 98.56) = .235 , P > 0.05), shyness' (F(2.92, 131.58) = .982 , P > 0.05) and prosocial behaviours' (F(2.63, 118.67) = .383 , P > 0.05) time points and family types.