Schizophrenia
- Created by: Tiddles99
- Created on: 01-05-17 11:08
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- Scizophrenia
- Symptoms
- Positive
- Hallucination; Delusions; Disorganised speech; Disorganised behaviour
- Negative
- Avolition; Speech poverty; Affective flattening
- Evaluation
- Inter-rater reliability; Symptoms encompass different abnormalities
- Positive
- Biological Explanations
- Genetics
- Runs in families; MZ twins at 46% concordance rate, DZ 14% concordance rate; 10% adopted children of Sz mothers, compared with 1% non Sz mothers
- Evaluation
- Small samples; not 100% concordance rates; twins may go on to develop Sz
- Dopamine hypothesis
- Excessive dopamine causes Sz; post-mortem, PET scans
- Successful drug therapy; cause and effect; simplistic; excessive dopamine only positive symptoms; dopamine receptors, rather than dopamine levels
- Neural correlates
- Structure and function of brain; enlarged brain ventricles
- Evaluation
- Cause and effect; Could be misdiagnosed immune disorder
- Genetics
- Psychological explanations
- Family disfunction
- Double bind - saying one thing, but body language suggests nother; Expressed emotion - emotional over-involvement
- Evalution
- cause and effect; diathesis stress model; individual differences; EE can't be measured
- Cognitive explanations
- dysfunctional thought processes
- Evaluation
- Positive symptoms have origin in faulty cognition; Sz take longer at cognitive tasks; Cause and effect; cannot explain every symptom
- Family disfunction
- Treatment
- Drug therapy
- Typical
- bind to dopamine receptors - blocking their action
- Atypical
- Bind to dopamine receptors - blocking their action TEMPORARY
- Typical
- CBT
- ABC model; develop alternative explanations
- Token economies
- Giving or withholding tokens which can be exchanged for privileges
- Evaluation
- work for certain behaviour; don't work in long term; ethical issues - control over lives; problems assessing effectiveness
- Drug therapy
- Symptoms
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