“…However, while halfand step-siblings are emotionally less close than full-siblings, they also report less sibling conflict and aggression (Sanner et al, 2018;Steinbach & Hank, 2018). Additionally, children living in stepfamilies are more likely to experience trajectories such as early home leaving and early union formation, in case they have a distant or conflicted stepchild-stepparent relationship (van den Berg et al, 2021). Given that modern families, including their sibling composition, are increasingly complex (Sanner et al, 2018), it is highly important to further investigate the potential differences in sibling influence between full-siblings and step-/halfsiblings, taking into account their relationship closeness and length of co-residence.…”