Biological

• Evaluate scientific methods of investigation as a strength?

  • precise and highly scientific methods
  • Scanning techniques such as fMRIS, EEGS, family and twin studies
  • Measure processes without bias
  • based on reliable data
• evaluate real-life application as a strength?

  • Development of psychoactive drugs from biochemical processes
  • Treat serious metal illnesses such as depression
  • Not effective for everyone but for ones that it does, they can manage their condition and not remain in hospital
• evaluate causal conclusions as a limitation?

  • offers explanation for mental illnesses in terms of the action of neurotransmitters
  • evidence is that a particular drug reduces symptoms of a mental disorder
  • it’s assumed that the neurochemical in drug causes the disorder
  • claims to have discovered causes where only an association exists
• What are twin studies used for?

  determine the likelihood that certain traits have genetic bases by comparing concordance rates
• what are monozygotic twins?

  twins that share 100 % of genes
• what are dizygotic twins?

  twins that share 50 % of genes.
• what is a genotype?

  actual genetic make-up of a person
• what is phenotype?

  the way genes are expressed through physical, behavioural and psychological characteristics
• what is PKU?

  a genetic disorder that when left unchecked, it causes severe learning difficulties.
• how is PKU resolved earlier on?

  child put on a diet and will develop without complications
• what is natural selection?

  any genetically determined behaviour that enhances survival will be continued in future generations
• what are evidence for natural selection?

  memory, attachment and mental disorders