Depression a Disorder of Power Author:Susan Heitler For some years now there have been two models for the cause of depression: the cognitive (thoughts cause feelings) and the physiological (chemical imbalances cause depressive reactions). Dr. Susan Heitler offers a third alternative in her conflict-focused theory of depression. This tape looks at loss powerlessness and submissiveness as... more » the root causes of depression and outlines specific techniques for dealing with the conflict in a positive and liberating way.« less