A Longitudinal Investigation ofFriendship Similarity: Selection and Socialization in Adolescent Behavior

The current study examined the homophilic processes of selection and
socialization in same-sex adolescent friendships across a 3-year period. The
framework of the actor-partner interdependence model for distinguishable dyads was
the main analytic technique, an improvement over previous analysis methods which
often did not allow for simultaneous exploration of selection and socialization.
Within the friendships, adolescents were distinguished based on their general peer
acceptance levels, and similarity was assessed for three behaviors: deviant behavior,
depression, and achievement motivation. Results showed evidence of both selection
and socialization for deviant behavior and achievement motivation, but not for
depression. Furthermore, partner influence paths suggested that more accepted
friends typically exerted more influence on less accepted friends. Gender also
moderated results, with girls tending to have stronger effects than boys.