“…Peers, especially best friends, also contribute to individual differences in sexual expectations, attitudes, and behaviors, albeit more so among girls than boys (e.g., East, Felice, & Morgan, 1993;Whitbeck, Conger, & Kao, 1993). For European American males, though apparently not for African American males, a similar association may reflect selection of friends with similar activities and values (e.g., Bauman & Ennett, 1996;Billy, Rodgers, & Udry, 1984;Rowe et al, 1989).…”