Dr Navid was trying an in vivo exposure therapy to help his client overcome his fear of the elevators. This therapy is part of a new form of psychotherapy; the Cognitive Behavioral Therapy (CBT). Exposure therapy helps people deal with their fears and anxieties. To do so, the psychologist exposes the client to the object that he/she fears and wants to avoid. In vivo exposure is a type of exposure therapy, where the client is directly exposed to a fearful situation in order to familiarize himself/herself with that.