“…Theoretically, the underlying model of psychopathology includes a range of different psychoanalytical theories such as ego psychology, object relations psychology, attachment theory, and self psychology Summers & Barber, 2010). Different psychodynamic psychotherapies can be of almost any length, ranging from a single or a few sessions (Abbass, Joffres, & Ogrodniczuk, 2009;Barkham, Shapiro, Hardy, & Rees, 1999) to fixed lengths such as 12, 16 or 24 sessions (Barber, Barrett, Gallop, Rynn, & Rickels, 2012;Leichsenring et al, 2013;Mann, 1973), and up to 2-3 times a week for several years (Knekt, Lindfors, Sares-Jäske, Virtala, & Härkänen, 2013). The activity of the therapist varies from highly active (as for example in Intensive Short-term Dynamic Psychotherapy; Abbass, Town, & Driessen, 2012;Davanloo, 2000) to significantly less active in classical Freudian psychoanalysis.…”