Clinical Glossary

Behavioural Experiments:  Used as part of CBT, the person in therapy will complete planned experiential activities, including experimentation or observation, in or between sessions and these are used to gather evidence to challenge their negative or delusional beliefs in an attempt to disprove these beliefs. Usually the therapist will have weakened the beliefs in advance with verbal challenge; this alone does not usually work and needs to be followed up with a behavioural experiment.


Delusion: False belief based on incorrect inference about external reality that is firmly sustained despite what almost everyone else believes and despite what constitutes incontrovertible and obvious proof or evidence to the contrary” (American Psychiatric Association [APA], 2000, pg. 821).


Persecutory Delusions: The belief that some entity, group or person has current/on-going or future intentions to harm the person without reason (Freeman & Garety, 1999).

Therapeutic Alliance: The relationship between a therapist and service-user; the nature of this relationship and the rapport between the therapist and service user may be central to the success of the therapy

Thought Insertion

Token Economy: Dickerson, Tenhula, Green-Paden, (2004) have reviewed use with peopel with schizophrenia.