Psychological Explanations of Schizophrenia
- Created by: The Shrew
- Created on: 25-04-15 17:30
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- Psychological Explanations
- Cognitive Explanations
- McKenna
- Defect in selective attention
- Attentional mechanism fail to filter incoming stimuli and process to extract meaning
- Over-whelmed by sensory information
- Attentional mechanism fail to filter incoming stimuli and process to extract meaning
- Defect in selective attention
- Frith
- Inability to distinguish between internal and external stimuli
- Explains auditory hallucinations
- Mistaken early interpretation of non sound as voices
- Own thoughts seem alien
- Faulty filtering of irregularity in neuronal pathway between the septo-hippocampal system and the pre-frontal cortex
- McGuigan
- Larynx active during auditory hallucinations= mistaken inner speech for someone else
- Johns
- 3 groups
- Sz with verbal hallucinations and delusions
- Sz with delusions but not hallucinations
- Healthy controls
- Conditions
- Read aloud
- Read aloud with acoustic distortion of own voice
- Read aloud while hearing someone else's voice (alien feedback)
- Distorted alien feedback
- Both groups of sz ps mis-attributed source of own distorted voice/ no difference in attributing source of alien feedback
- Use of control group/ differentiated between delusions and hallucination
- Equated difficulty
- Lack of ecological validity
- 3 groups
- McKenna
- Socio-Cultural Explanations
- Life Events
- Hirsch et al
- Life Events and Difficulties Scale
- 23% relapse rate after 1 year, due to life events
- Life Events and Difficulties Scale
- Prospective not retrospective
- Ruled out timings of life events being dependent on memory that could be distorted to try and 'explain' episdoe
- Hirsch et al
- Families' interpersonal communication
- Bateson et al
- Double-Bind Theory
- Communication destructive and contradictory
- Double-Bind Theory
- Ringuette and Kennedy
- Clinicians analyse contents of letters from parents to hospitalised children
- Double-bind content consistent regardless of disorder
- Clinicians analyse contents of letters from parents to hospitalised children
- Bateson et al
- Life Events
- Cognitive Explanations
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