“…Although several studies have suggested sex differences in assortative mating and behavior contagion (e.g., Galbaud du Fort et al, 1998;Gleiberman et al, 1992;Hall et al, 1983a, b;Haynie et al, 2005;Kim and Capaldi, 2004;McLeod, 1995;Moffitt et al, 2001;Moskalenko et al, 1992;Olmsted et al, 2003;Sakai et al, 2004;Schuckit et al, 1994;Kandel, 1993, 1997), findings have been weakened by methodological limitations (e.g., low power, clinical samples) and have been inconsistent and contradictory across studies. Furthermore, Jacob and Bremer (1986) demonstrated how the failure to account for sex differences in the base rates for substance use and dependence, as well as deficiencies and discrepancies in methodology across studies, lead to erroneous conclusions regarding sex differences in assortative mating.…”