Close college-age friendships provide differential opportunities for reinforcing dispositional tendencies and fostering accommodation or change. This finding was obtained from a crosssectional study of 66 pairs of same-sex college-age friends (58% female). Each pair of friends was extreme and either very similar or different with regard to extraversion-introversion. Interviews with each friend were analyzed for references to each other's role in various friendship domains, including the setting of the friendship and position with regard to chatting, disclosing, expressing opinions about peers, and energizing the friendship. Matched friends mutually reinforced each other's similar dispositional tendencies. Friends with contrasting personalities showed patterns of personality accommodation as well as complementary reinforcement. Implications are discussed for embedding reciprocal theories of personality development in close friendships.
KeywordsExtraversion-introversion; reciprocal-interaction; friendship practices; mutual reinforcement; complementarity One person's experience of another person has a special quality, quite different from his perception of a piece of cheese…. It is marked by a recognition of mutuality…accompanied by an appreciation of the feelings of the other person and some willingness to adjust to them…. It is difficult to interpret any interpersonal proceeding without knowledge of the history of both personalities and a knowledge of their current thoughts and feelings. (Murray, 1951, pp. 438-440) Observational studies have long recognized that particular personalities produce a distinctive social press or force (Block, 1971;Funder, 1999;Murray, 1938). To date, the social force of personality has usually been observed unilaterally, with less attention to how the personality of the observer interacts with that of the observed. In addition, studies of the bilateral force of personalities have usually focused on strangers rather than people who have a long history of interacting with each other (Sadler & Woody, 2003;Thorne, 1987;Tracey, 2004). While observations of strangers can reveal the instantaneous press of personality, interviews with friends can reveal how they come to live with and potentially adjust to each other's dispositional similarities and differences. Accordingly, this unprecedented study explored how close friends who were extreme and either very similar or very different with regard to extraversion-introversion reportedly engaged in an array of friendship practices.
InteractionsThe dynamic interaction of personality and environments has increasingly gained broad theoretical attention (e.g., Caspi & Roberts, 2001;Fleeson, 2004;Mischel & Shoda, 1998). A commonality among dynamic approaches is adherence to the generally accepted view that personality has both bio-genetic and psychosocial foundations. New, however, is an emphasis on examining trait processes (e.g., how a person manages to enthusiastically chat with strangers) in addition to outcomes (e.g., I like to talk w...