For instance, the examination of gender as a moderator of peer socialization effects suggested that gender may prove relevant only within more complex two- and three-way interaction terms that also consider age and the specific behavior being influenced. In the past decade, close friend influence effects for substance use (Erickson, Crosnoe, & Dombusch, 2000) and roommate socialization of binge drinking (Duncan, Boisjoly, Kremer, Levy, & Eccles, 2005) have been found for male, but not female, adolescents. In an examination of the moderating effects of parental support and discipline on peer influence of alcohol use, Marshal and Chassin (2000) found that parental intervention reduced susceptibility to influence for girls, but amplified influence effects for boys of the same age. Gender differences in patterns of moderator relationships also were found in research on depression contagion, yet with different results (Prinstein, 2007; Stevens & Prinstein, 2005).
