What Exposure Therapy Is
Exposure therapy is a family of behavioral interventions that involve systematic, graduated contact with feared stimuli — situations, objects, thoughts, memories, or bodily sensations — in order to reduce avoidance, diminish fear, and restore freedom and functional capacity to individuals whose lives have been narrowed by anxiety or trauma. It is the most evidence-based behavioral intervention available for anxiety disorders and is the active ingredient in effective treatments for specific phobias, social anxiety disorder, panic disorder, OCD (as Exposure and Response Prevention), PTSD, and agoraphobia. The evidence base for exposure therapy is among the largest and most consistent in all of clinical psychology.
Exposure therapy works through two primary mechanisms. Habituation — the natural reduction in anxiety that occurs when a feared stimulus is encountered repeatedly without the feared outcome occurring — was the original theoretical account of exposure's effectiveness. More recent and increasingly influential is inhibitory learning theory, which holds that exposure works primarily by creating a new, competing association between the feared stimulus and safety, rather than erasing the original fear association. This newer account has important practical implications for how exposure therapy is designed and delivered to maximize long-term effectiveness.