Biological Approach

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  • Biological approach
    • Assumptions
      • Everything psychological is first biological
      • The mind lives in the brain- all thoughts, feelings and behaviour ultimately have a physical basis
      • Contrasts to cognitive approach that sees mental processes of the mind as being separate from the physical brain
    • Genetics
      • Twin studies
        • Determine the likelihood that certain traits have a genetic basis by comparing the concordance rates between pairs of twins
        • If identical twins are found to have higher concordance rates than non-identical twins this would suggest a genetic basis
          • Identical twins- monozygotic
          • Non-identical twins- dizygotic
          • MZ twins share 100% of the same genes whereas DZ twins share about 50%
      • Study whether behaviour characteristics are inherited the same way as physical characteristics
    • Genotype and phenotype
      • Genotype- a persons genetic makeup
      • Phenotype- a persons characteristics of which are inherited and environmental based
      • Human behaviour depends upon an interaction between inherited factors and the environment
    • Evolution
      • Reproduction
      • Survival
    • Evaluation
      • WEAKNESSES
        • FOCUSSES TOO MUCH ON NATURE
          • Argues behaviour is caused by hormones, neurotransmitters and genetics
            • Rather than environmental factors alongside
      • STRENGTHS
        • HIGHLY SCIENTIFIC
          • Lab experiments
            • Reliable
            • Measurable
            • Not bias
        • RESULTED IN TREATMENTS BEING MADE FOR MENTAL DISORDERS

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