“…There are three "clusters" of personality disorders: A, B, and C (APA, 2013); patients with cluster B diagnoses are considered to more commonly present to services (NICE, 2009a(NICE, , 2009b. ASPD is a complex personality disorder and particularly difficult to diagnose and treat (Fahy, 2012). The diagnosis of ASPD is controversial; Fitzgerald and Demakis (2007) suggest that professionals understand the term, but it is often confused with psychopathy (Anderson, Sellbom, Wygant, Salekin, & Krueger, 2014).…”