Clinical researchers have also raised related concerns about disorder coherence. Two individuals could both be diagnosed with obsessive-compulsive personality disorder (OCPD) and yet not share a single symptom in common (Widiger & Trull, 2007), and there are over 100 different ways to meet the criteria for diagnosis of borderline personality disorder (Frances, First, & Pincus, 1995). Recognition of this problem has led clinical researchers to disaggregate multidimensional syndromes into homogeneous constructs. We next turn to examples of this work.
