“…In addition to highlighting the relevance of maternal BPD symptoms to the relation between maternal perceptions of infant anger and the use of punitive/minimizing emotion socialization strategies (which may further exacerbate vs. regulate infant distress; see Kiel et al, 2011;Spinrad et al, 2007), these results provide initial evidence for the role of maternal emotion regulation difficulties in the relation between maternal BPD symptoms and nonsupportive emotion socialization. As such, the results highlight the potential utility of interventions targeting emotion regulation in mothers with BPD (e.g., dialectical behavior therapy [Linehan, 1993] or emotion regulation group therapy [Gratz, Tull, & Levy, 2014]), in order to mitigate risk for the intergenerational transmission of emotion regulation difficulties (and related problems) from mothers with BPD to their children. Likewise, given that both the interpersonal and emotion regulation difficulties seen in BPD are theorized to stem from mentalizing deficits (Fonagy & Bateman, 2008), interventions focused on improving mentalization capacity and decreasing hypermentalizing among mothers with BPD (e.g., mentalization-based treatment; Fonagy, Luyten, & Bateman, 2015) may have benefits for both maternal emotion regulation and emotion socialization, as well as the motherinfant relationship in general.…”