“…A large body of research has shown that borderline personality is strongly related to neuroticism and/or a general factor of maladaptive personality (Samuel & Widiger, ; Sharp et al, ; Trull, Widiger, Lynam, & Costa, ; Wright, Hopwood, et al, ). Yet, there is also a strong feeling in clinical circles that borderline PD should be retained in the lexicon (Gunderson, Fruzetti, Unruh, & Choi‐Kahn, in press; Lieb, Zanarini, Schmahl, Linehan, & Bohus, ; Zimmerman, )—there are treatments, clinics, advocacy groups, third‐party reimbursement schedules, scientific societies, and journals organized around the concept. Researchers and clinicians invested in borderline PD are loathe to let it go despite convincing evidence that it can be more effectively captured by trait concepts, at least when it is conceptualized as a stable disposition.…”