Schizophrenia: cognitive explanations (slides)

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What’s going on inside the ‘black
box’?
There’s
something
wrong with
me
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People
are
laughing
on the
bus
What’s going on inside the ‘black
box’?
People are
trying to
sabotage
my career
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My
papers
are not
where I
left them
What’s going on inside the ‘black
box’?
My family is
plotting
against me
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I can’t
hear
what
people
are
saying
Cognitive approach
Schizophrenia symptoms are the result of
faulty information processing



Misattributed speech & behaviour
Faulty self-monitoring
Deficits in STM & semantic memory
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
Cognitive Approach
Perception
Inference
Search for
new info
Source: Bentall (1990)
Belief
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Events in
the world
Cognitive approach
Treatment involves getting the patient to
modify their beliefs about their experiences
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
Cognitive therapies
CBT strategies to challenge & help modify
delusory beliefs




Identify delusions
Challenge evidence on which delusions are
based
Design ‘experiments’ to test reality of this
evidence
Chadwick & Lowe (1993) – significant
reductions in delusions in 10 out of 12
patients
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
Cognitive therapies
Normalising strategies where patient is taught
to understand the nature of schiz. symptoms



Challenge ‘catastrophising’ beliefs about
schizophrenia
Help patient feel that symptoms are
understandable and ‘normal’
Helps 70% of patients although other 30%
may deteriorate (Kingdon & Turkington, 1996)
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
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