Chapter 8

Experiencing Psychosis: Schizophrenia Spectrum

Set A

Custodial Care

A form of hospitalization or restraint for individuals with psychopathologies whose behaviour is thought of as disruptive.

Delusions of Control

Delusions where the person believes that his or her thoughts, feelings or actions are being controlled by external forces (e.g. extra-terrestrial or supernatural beings).


Firmly held but erroneous beliefs that usually involve a misinterpretation of perceptions or experiences.

Dendritic Spines

Small protrusion from a neuron's dendrite that receives input from a single synapse of an axon.


A disorder of speech where the individual may drift quickly from one topic to another during a conversation.

Concordance Studies

Studies designed to investigate the probability with which family members or relatives will develop a psychological disorder depending on how closely they are related - or, more specifically, how much genetic material they have in common.

Delusions of Reference

Delusions where the individual believes that independent external events are making specific reference to him or her.

Dementia Praecox

An early, general term for a number of diagnostic concepts including paranoia, catatonia and hebephrenia (symptoms indicative of incoherence and fragmentation of personality).