- 1. Schizophrenia Questions 1. Differentiate between positive
and negative symptoms. 2. What are the major symptoms of
schizophrenia? 3. Differentiate between hallucinations and
delusions? 4. How long does one have to exhibit the symptoms to be
diagnosed with schizophrenia?
2. Learning Objectives By the end of this lesson you: Must be
able to describe (Ao1) the biological explanation of schizophrenia.
Should be able to describe the social explanation of schizophrenia.
Should be able to compare the two descriptions. Pg. 20 3.
Biological Approach Nature debate schizophrenia a result of our
genetic inheritance or our brain functioning. defective version of
a gene, called PPP3CC to produce an imbalance in levels of dopamine
4. Inherit PPP3CC Gene Imbalance in dopamine levels Resulting in
excessive or reduced levels in the brain Excessive limbic system
positive symptoms type I Lack of prefrontal cortex-negative
symptoms-type II The Dopamine Hypothesis Dopamine is a
neurotransmitter and has many functions in the brain, including
important roles in motivation, mood, attention, working memory, and
learning. 5. Type I & Type II Symptoms Schizophrenia has been
linked to increased levels of dopamine. This can happen in specific
areas of the brain such as the limbic system (emotions). Too much
dopamine in this area is linked to positive symptoms of
schizophrenia. e.g. delusions and Type I schizophrenia.
Schizophrenia is also sometimes linked to decreased levels of
dopamine. This can happen in specific areas of the brain such as
the pre-frontal cortex (intellectual functioning). Too little
dopamine in this area is linked to negative symptoms of
schizophrenia. e.g. poor cognitive functioning and Type II
schizophrenia. 6. Social Explanation The social causation
hypothesis suggests that those from lower social classes who are
living in urban areas are more at risk of developing schizophrenia.
Being in a lower social class increases the stress factors for a
person, for example the stress resulting from high population
density, high levels of unemployment, poor housing and low
socioeconomic status. Such factors are associated with living in
inner cities. 7. Must be able to describe (Ao1) the biological
explanation of schizophrenia. Should be able to describe the social
explanation of schizophrenia. Should be able to compare the two
descriptions. 8. www.jamiesflipped.co.uk @jamiesflipped