abnormality; biological approach

biological approach to abnormality

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  • abnormality: biological approach
    • abnormality is an effect of a physical issue in the body, thus abnormality is an illness or disease
    • reasons for abnormality:
      • genetics
        • some people may be genetically prone to developing mental disorders e.g. chance of schizophrenia increases if parent has it. even more so for twins
      • brain damage
        • abnormal behavior can occur from brain damage; e.g. Alzheimer's is a loss of brain cells and brain function
      • infection
        • infection can lead to mental illness, e.g. if syphillis goes untreated it can develop to psychosis
      • biochemistry
        • an imbalance of chemicals in the brain can cause abnormal behaviour; e.g. depression is linked to a lack of seretonin
    • positive evaluation
      • scientific evidence: based on well established proven scientific principles, very accurate and reliable research. cannot be biased.
      • explains many disorders: many disoreders understood by rhe medical model: e.g. schizophrenia by genetics
    • negative evaluation:
      • reductionist: gives one simple explanation to something much more complex, it says biology cannot account for abnormal behavior and this must be learnt
      • underlying causes; we cannot prove if biological differences are cause or result of abnormal behaviour


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