The evaluative habits developed in sibling interactions undoubtedly affect the salience and choice of comparative referents in self-ability evaluations in later life
Albert BanduraLearning would be exceedingly laborious, not to mention hazardous, if people had to rely solely on the effects of their own actions to inform them what to do. Fortunately, most human behavior is learned observationally through modeling: from observing others one forms an idea of how new behaviors are performed, and on later occasions this coded information serves as a guide for action.
Albert BanduraStudents judge how well they might do in a chemistry course from knowing how peers, who performed comparably to them in physics, fared in chemistry
Albert BanduraPeople judge their capabilities partly by comparing their performances with those of others
Albert Bandura