psychological problems Flashcards
1
Q
synptoms of schizophrenia
A
- hallucinations
- delusions
- catatonic behaviour
- negative symptoms
- disorganised speech
2
Q
what are delusions
A
- false beliefs
3
Q
what are hallucinations
A
- false perceptions that can affect the different senses
4
Q
what is catatonic behaviour
A
- behaviour ranging from repetitive , frenzied actions to statue like stupor
5
Q
what is negative symptoms
A
- absence of normal healthy behaviour
6
Q
which ethic group / s are more likely to be diagnosed with schizophrenia
A
- more diagnosed in people of African / Caribbean origin
- lower in people of Asian origin
7
Q
prevalence of schizophrenia
A
1% of population
8
Q
recovery statistics for schizophrenia
A
-leads to hospitalisation in approx 15% diagnosed
- 25% fully recover
- 10% dead
9
Q
what is the biological explanation of schizophrenia
A
- schizophrenics have too many D2 receptors in their brain
- means more dopamine binds to these receptors & more neurons fire too easily.
- excess dopamine being absorbed
- leads to erratic movement , hallucinations + delusions
10
Q
how is a schizophrenic brain different to a normal one
A
- volume of brain is 5% lower
- temporal lobe lack grey matter
- hippocampus smaller than average
- frontal lobe less active due to decreased blood flow
11
Q
criticisms of biological explanation for schizophrenia
A
- ignore role of nurture brain still needs to interact with environment to produce symptoms like hallucinations / delusions
- establishing cause + effect-> is brain dysfunction the cause of schizophrenia or just another symptom of it?
12
Q
explain the social drift theory
A
- once people have it they began to drift down the social scale
- disengage with society - doesn’t make sense to them anymore
- even if they do want to remain part of society this is hard due to their diagnosis
- rejected by society - discrimination and stigmatism - may lose jobs due to diagnosis
- society may reject the, due to their behavior
- disengagement + rejection from downward spiral - sent in downward cycle in terms of society
13
Q
criticisms of social drift theory
A
- problem with cause and effect - does poverty lead to schizophrenia or does schizophrenia lead to poverty
- focuses too much on wider society - ignores role family environment may have in the development of schizophrenia
14
Q
Daniel et al aim
A
- investigate activity in the pre frontal cortices of people with schizophrenia
15
Q
Daniel et al procedure
A
- to increase dopamine levels they gave half of participants amphetamines & other half placebo - switched next day
- completed WCST on both days
- also used SPECT scan to measure blood Dow to brain