:
- : . , , . 5 8 , .
- : . . 10 40 , 2 4 2-4 . , , (Hutzli & Schneeberger, 1995). 30 40 (Grawe, Caspar & Ambühl, 1990).
10 20 , , , (. Koss & Shiang, 1994). , , .
- (. Kessler & Roth, 1980): , , . (power to the therapist), , , , . . (power to the mediator) , , . -, (Perrez, 1988). (power to the person) , , . (Marks, 1994).
- . , (. 1).