Cognitive versus behavioral procedures in cognitive-behavior therapy: a critical review of the evidence.

During the past decade there has been an increasing emphasis on cognition in psychology and behavior therapy. This movement has spawned several distinctive cognitive therapies. While those therapies do employ innovative cognitive treatment procedures, they often do so in the context of well-established behavioral treatment procedures which may or may not be acknowledged by the label "cognitive-behavior therapy". This paper addresses the question of whether cognitive therapy is an evolutionary or revolutionary development from behavior therapy and critically evaluates the evidence for the efficacy of procedures specific to cognitive therapy.