The objective of this study is to analyze the role that peer support plays in the incidence relationships between sociometric popularity and general self-concept based on sociometer theory. A total of 676 randomly selected secondary school students from the Basque Country between 12 and 18 years of age participated voluntarily. All of them completed a sociometric questionnaire, the Family and Friends Support Questionnaire, and the Dimensional Self-concept Questionnaire. Several models of structural equations were tested. The results indicate that sociometric popularity (...) is linked to self-concept through the perceived social support of peers. These results are discussed within the framework of positive psychology and its practical implications in the school context. (shrink)