AQA A-Level Psychology 7182
Social Influence
Memory
Attachment
Approaches in Psychology
Biopsychology
Clinical Psychology and Mental Health
Research Methods
Scientific Processes
Quantitative and Qualitative Data
Data Handling and Analysis
Inferential Testing
Issues and Debates in Psychology
RelationshipsOption 1
GenderOption 1
Cognition and DevelopmentOption 1
SchizophreniaOption 2
Eating BehaviourOption 2
StressOption 2
AggressionOption 3
Forensic PsychologyOption 3
AddictionOption 3
Explanations for Nicotine AddictionOption 3
Schizophrenia
Biological explanations for schizophrenia
- 4 things to know
- Paper 3
Overview
Family and twin study evidence for a genetic basis, neural correlates, and the dopamine hypothesis with its evaluation.
What you need to know
Answer each one before you reveal it.
What are neural correlates of schizophrenia?
What does the dopamine hypothesis claim about schizophrenia?
Evaluate the dopamine hypothesis as an explanation of schizophrenia.
Questions from this subtopic
Each one with the model answer underneath.
- 1
What does the genetic explanation for schizophrenia propose about how the disorder is transmitted?
Model answer
It proposes that schizophrenia is inherited through genes passed from parents to offspring.
- 2
What do family studies reveal about the relationship between genetic relatedness and schizophrenia risk?
Model answer
The risk of developing schizophrenia increases with genetic relatedness to an affected individual.
- 3
How do twin studies assess the genetic contribution to schizophrenia?
Model answer
They compare concordance rates between monozygotic twins (sharing 100% of genes) and dizygotic twins (sharing approximately 50% of genes).
- 4
What do concordance rates in twin studies suggest about the genetic component of schizophrenia?
Model answer
Concordance rates are higher in monozygotic twins than dizygotic twins, suggesting a genetic component to the disorder.
- 5
Why do concordance rates in monozygotic twins provide evidence that genetics alone cannot fully explain schizophrenia?
Model answer
Concordance rates for monozygotic twins are not 100%, indicating that other factors beyond genetics must be involved.
- 6
What are neural correlates in relation to schizophrenia?
Model answer
Measurable brain abnormalities associated with schizophrenia, including structural and functional differences.
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