“…This literature provides examples of the only child's behavior problems and personality difficulties (Blake, 1974;Jiao, Ji, & Jing, 1986;Petzhold, 1988;Rosenberg & Falk, 1989;Rosenberg & Leino, 1987;Thompson, 1974;Westoff, 1978). These and other studies attested to the only child's lack of sociability (Claudy, 1984), greater than expected incidence of mental health problems (Belmont, 1977;Howe & Madgett, 1975;Makihara, Nagoya, & Nakajima, 1988), persistent egocentrism and uncooperativeness (Jiao, Ji, & Jing, 1986), negative social behaviors (Petzhold, 1988;Thompson, 1974), and lack of friends (Graham-Bermann & Gest, 1991;Miller & Maruyama, 1976).…”