This longitudinal study examines the association between child gender and child aggression via parents' physical control, moderated by parents' gender-role stereotypes in a sample of 299 two-parent families with a 3-year-old child in the Netherlands. Fathers with strong stereotypical gender-role attitudes and mothers were observed to use more physical control strategies with boys than with girls, whereas fathers with strong counterstereotypical attitudes toward gender roles used more physical control with girls than with boys. Moreover, when fathers had strong attitudes toward gender roles (stereotypical or counterstereotypical), their differential treatment of boys and girls completely accounted for the gender differences in children's aggressive behavior a year later. Mothers' gender-differentiated parenting practices were unrelated to gender differences in child aggression.Higher levels of aggressive behavior in boys than in girls represent one of the most pronounced gender differences found in the literature on child development (Archer, 2004;Hyde, 1984;Loeber, Capaldi, & Costello, 2013). It has been suggested that in addition to potential biological and evolutionary influences (Archer, 2004), these gender differences may arise because of parental differential treatment of boys and girls (Chaplin, Cole, & ZahnWaxler, 2005;Mandara, Murray, Telesford, Varner, & Richman, 2012). Parents' gender-role attitudes might play a role in the differential treatment of their sons and daughters (Bem, 1981;Eagly, Wood, & Diekman, 2000), but this mechanism has rarely been studied. Therefore, the current study examined the longitudinal associations between mothers' and fathers' gender-role attitudes, gender-differentiated use of physical control strategies, and gender differences in child aggression. Social role theory and gender schema theory provide rationales for differential parenting of boys and girls, and for the link between gender-differentiated parenting and differences in aggressive behavior of boys and girls (Bem, 1981;Eagly et al., 2000).
Social Role TheoryAccording to social role theory (Eagly et al., 2000), gender differences in social behavior arise from prevailing divisions of gender roles in societies, in which women are viewed as homemakers and men as economic providers. This division is still visible in present-day societies; mothers are more likely to be the primary caregivers of young children (Huerta et al., 2013; The Fatherhood Institute, 2010), women are overrepresented in educational and nurturing occupations, and men are overrepresented in occupations that are associated with power, physical strength, status, and agentic personality characteristics (i.e., management, engineering; U.S. Department of Labor, 2012).It is proposed that these gender roles lead to stereotypical ideas and expectations about the different nature and behavior of men and women (i.e., gender stereotypes), which lead to differential treatment of men and women, and boys and girls, which in turn leads to gender differences in behav...