Cognitive theory (CT) is currently the most widely acknowledged framework used to describe the psychological processes in affective disorders like depression. The purpose of this paper is to assess the philosophical assumptions upon which CT rests. It is argued that CT must be revised due to significant flaws in many of these philosophical assumptions. The paper contains suggestions as to how these problems could be overcome in a manner that would secure philosophical accuracy, while also providing an account that is (...) better suited to explaining some of the cognitive, emotional, and bodily manifestations of affective disorders. (shrink)