The present study examined whether adolescent friendships dissolve because of characteristics of friends, differences between friends, or both. Participants included 410 adolescents (201 boys, 209 girls) who reported a total of 573 reciprocated friendships that originated in the 7 th grade (M age = 13.20 years). Discrete-time survival analyses were conducted in which peer nominations and teacher ratings collected in Grade 7 predicted the occurrence and timing of friendship dissolution across grades 8 to 12. Grade 7 individual characteristics were unrelated to friendship stability, but Grade 7 differences in sex, peer acceptance, physical aggression, and school competence predicted subsequent friendship dissolution. The findings suggest that compatibility is a function of similarity between friends rather than the presence or absence of a particular trait.
KeywordsFriends; relationship dissolution; survival analysis; aggression; peer acceptance No one likes to lose a friend. For adolescents navigating autonomy from the family, the dissolution of a friendship can be especially challenging (Hartup, 1993). But why do friendships end? High levels of an undesirable characteristic, such as aggression, threaten friendships (Piehler & Dishion, 2007). Dissimilarity also anticipates dissolution (Poulin & Chan, 2010). Previous studies have focused on either levels of individual characteristics or differences between friends (known henceforth as dyadic differences), making it difficult to draw firm conclusions about adolescent friendship dissolution because the two are confounded: The largest dyadic differences occur when individual characteristics are most pronounced (e.g., those with the highest levels of aggression are also the least similar to the bulk of their peers, whose scores fall in the normal range of the distribution). In the present study, we compared dyadic differences in school-related behaviors and individual levels of each to predict the occurrence and timing of the dissolution of friendships originating in middle school. The voluntary nature of friendships allows participants to leave unsatisfactory relationships with few countervailing external pressures. As is the case in voluntary romantic relationships, dissatisfaction with friends is assumed to arise from an imbalance of relationship rewards and costs (Levinger, 1979). Dissatisfaction may have origins in dissimilarity or in the presence of one or more undesirable attributes in a partner. We review each in turn.
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Dissimilarity as a Source of Friendship DissolutionEvidence for homophily, the tendency for friends to resemble one another, (Lazarsfeld & Merton, 1954) suggests that similarity is important for establishing and maintaining friendships. Dissimilarity propagates conflict and negative affect (Laursen, Hartup, & Koplas, 1996). In social exchange terms (Thibaut & Kelley, 1959), dissimilarity threatens perceptions that relationship participants share equally in the benefits of affiliation. One partner is apt to bear more co...