“…Research documents that social learning processes operate to make siblings similar during childhood and adolescence. For example, sibling modeling hypotheses have been proposed and found to explain sibling similarities in areas such as romantic and sexual risk behaviors (McHale et al, 2009;Wheeler et al, 2016;Whiteman, Zeiders, Killoren, Rodriguez, & Updegraff, 2014), alcohol and other substance use (Slomkowski, Rende, Novak, Lloyd-Richardson, & Niaura, 2005;Whiteman, Jensen, & Maggs, 2014), and aggression and delinquency (Patterson, 1984;Slomkowski, Rende, Conger, Simons, & Conger, 2001). Although less work has focused on sibling influence during emerging adulthood, two recent articles have explored sibling influence on emerging adults' risky behaviors.…”