“…According to Stiles and colleagues (Stiles, 1980; Stiles et al, 1994), session depth and smoothness vary independently. Session depth has been associated with therapeutic success and linked to a number of other positive variables like problem solving, perceptions of session helpfulness, emotional and intellectual empathy, therapeutic alliance, attachment security in psychotherapy, and therapist competence (Antunes-Alves, Thompson, Kramer, & Drapeau, 2014; Cummings, Barak, & Hallberg, 1995; Duan, & Kivlighan, 2002; Lingiardi, Colli, Gentile, & Tanzilli, 2011; Romano, Fitzpatrick, & Janzen, 2008; and Thompson, & Hill, 1993, respectively). Less research has focused on smoothness, but some research does suggest that smoothness across sessions is associated with improved symptoms (Pesale, 2011; Pesale, Hilsenroth, & Owen, 2012).…”