Chapter 8

Experiencing Psychosis: Schizophrenia Spectrum

Set B

Diminished Emotional Expression

A reduction in facial expressions of emotion, lack of eye contact, poor voice intonation, and lack of head and hand movements that would normally give rise to emotional expression.

Double-Blind Hypothesis

Theory advocating that psychotic symptoms are the result of an individual being subjected within the family to contradictory messages from loved ones.

Dopamine Hypothesis

A theory which argues that the symptoms of schizophrenia are related to excess activity of the neurotransmitter dopamine.

Enlarged Ventricles

Enlargement of the areas in the brain containing cerebrospinal fluid, associated with schizophrenia.

Erotomanic Type

A relatively rare psychotic delusion where an individual has a delusional belief that a person of higher social status falls in love and makes amorous advances towards them.

Diathesis Stress

The perspective that psychopathology is caused by a combination of a genetically inherited biological diathesis (a biological predisposition to schizophrenia) and environmental stress.

Downward Drift

A phenomenon in which individuals exhibiting psychotic symptoms fall to the bottom of the social ladder or even become homeless because they cannot hold down a job or sustain a relationship.

Electro-convulsive Therapy (ECT)

A method of treatment for depression or psychosis, first devised in the 1930s, which involves passing an electric current of around 70-130 volts through the head of the patient for around half a second.