“…Despite this broad range of interventions, we did not find indications that effect sizes of the major categories (i.e., cognitive behavior therapy vs. other interventions, social support interventions vs. other interventions) differed from each other. The finding that different types of psychological interventions are about equally effective in the treatment of depression also was noted in other meta-analyses (Churchill et al, 2001;Cuijpers et al, in press;Wampold, Minami, Baskin, & Callen Tierney, 2002). In the general psychotherapy literature, it has been debated for more than three decades now whether psychotherapies are actually equally effective (Cuijpers, 1998;Luborsky, 1995;Luborsky, Singer, & Luborsky, 1975;Shadish & Sweeney, 1991), but no definite answer has been found.…”