“…Descriptive research has shown that gendertyped play may be differentially reinforced and punished in early child-care settings (see Fagot & Patterson, 1969;Serbin, O'Leary, Kent, & Tonick, 1973), and experimental research has shown that social contingencies and context (e.g., presence of a teacher, peer, or model) can affect the rates of gender-typed play (e.g., Green, Bigler, & Catherwood, 2004;Langlois & Downs, 1980). Related research in education has found differential (a) gender-role depictions of female and male characters in children's stories (e.g., Hitchcock & Tompkins, 1987;Nibbelink, Stockdale, & Mangru, 1986) and educational computer software (e.g., see McNair, Kirova-Petrova, & Bhargava, 2001), (b) portrayals of female and male roles in elementary, secondary, and college textbooks (e.g., the exclusion of biographies offemale scientists, gender bias; see Hulme, 1988;Kleinman, 1998;Sadker &.…”