... Borderline personality pathology has proven to be particularly challenging to treat because of patients' associated chronic and severe psychosocial impairment (Town, Abbass, & Hardy, 2011;Skodol et al., 2002), high risk of selfharm (Panos, Jackson, Hasan, & Panos, 2014;American Psychiatric Association, 2001), wearing interpersonal dynamics (Gunderson, 2003), and high rates of comorbidity, that is, depressive disorders and other personality pathology (Gunderson, 2003;Zanarini, Frankenburg, Hennen, Reich, & Silk, 2004;Zimmerman, Rothschild, & Chelminski, 2005). Although several effective treatments for borderline personality disorder exist (i.e., Bateman & Fonagy, 2011;Carsky, 2013;Hobson, 1985;Jørgensen et al., 2013;McMain et al., 2009;Linehan, 1993;Rockland, 1992;Ryle, 1997;Stevenson, Meares, & D'Angelo, 2004;Yeomans, Selzer, & Clarkin, 1992), patients with BPD continue to prematurely drop-out of treatment at high levels (Bennett et al., 2006), highlighting a critical gap between empirically supported treatments and effective clinical practice. ...