Anna London

1 Introduction Borderline personality disorder (BPD) is characterized by instability in identity, interpersonal relationships and affect regulation, alongside impulsivity (APA 2013). The clinical severity is considerable: About 5.9% of affected individuals die by suicide (Temes et al. 2019), and many continue to experience marked impairment despite treatment (Cristea et al. 2017; Woodbridge et al. 2022).

1 Introduction Recent research in the field of developmental psychopathology highlights the need to consider the developmental antecedents and trajectories of personality disorders in order to understand these disorders (Altschuler and Krueger 2021; Cicchetti 2014; De Fruyt and De Clercq 2014). Borderline personality disorder (BPD) is among the most frequently investigated personality disorders in the context of developmental psychopathology (Chanen and Kaess 2012; Goodman et al.