We conducted analyses to examine the relation between parental divorce, parental relationship discord, offspring alcohol problems polygenic scores (PRSALC), and alcohol outcomes (i.e., initiation of regular drinking and alcohol use disorder). The parental divorce and parental relationship discord models were run separately in view of prior evidence that both parental marital status and the tenor of their relationship represent separate and unique influences on children’s outcomes (Gager et al., 2016), including their alcohol outcomes (Salvatore et al., 2022). Additionally, we note that although a great deal of conflict between parents likely precedes marital dissolution, the potential mechanisms contributing to increased risk for poorer offspring alcohol outcomes associated with parental divorce and parental relationship discord may be different. For example, on average, divorce is associated with reductions in social and economic capital (e.g., income loss; Raley & Sweeney, 2020) and decreases in effective parenting behaviors such as parental monitoring (Amato & Keith, 1991), which is consistently linked with offspring alcohol use behaviors (Jackson & Schulenberg, 2013) likely via increased access to alcohol. In contrast, offspring may use alcohol to cope with
