Biological Approach

• physical processes e.g genetic inheritence
• Neurochemistry - chemicals that regulate
• phenotype = genotype + environment
• MZ= monozygotic (100% genes)
• DZ = dizygotic (50% genes)
• concordance (correlation) = similar
• Evolution = good memory, secure attachment, mental disorder
• Strengths

  • Scientific methods: Fmris, EEG’s, drug trials
  • applications : psychoactive drugs for depression
• Weaknesses

  • assumes cause: lack of drugs = cause
  • deterministic: no control over internal biological causes
  • nature v nurture: environment