“…Anxious solitary children may have friends with similar behavioral tendencies. Indeed, evidence indicates that children tend to become friends with peers with whom they share behavioral characteristics (homophily) (Farver, 1996;Haselager, Hartup, van Lieshout, & Riksen-Walraven, 1998;Hogue & Steinberg, 1995;Rubin, Lynch, Coplan, Rose-Krasnor, & Booth, 1994). Although this effect has most often been demonstrated for conconcordance in aggressive behavior (Farver, 1996;Hanish, Martin, Fabes, Leonard, & Herzog, 2005), Rubin and colleagues have demonstrated that children develop preferences for interacting with playmates who resemble themselves with respect to rate of solitary behavior ; see also French, Jansen, Riansari, & Setiono, 2003;Haselager et al, 1998).…”