A01

• A01; introduction

  • suggests everything is innate and goverened by internal biological factors
  • mind lives in the brain so all thoughts, feelings and behaviours have a physical basis
• A01; twin studies

  • used to investigate if characteristics have a genetic basis by evaluating concordance rates
  • for example MZ twins share 100% DNA so should have identifical charactersitics
• phenotypes

  • observable/physical characteristics
  • consequence of interactions between genotype and the environment
• genotype

  • particular set of genes a person posses/genetic makeup
• Darwin- natural selection

  • darwin proposed advantageous alleles in a population give individual advantage and allow them to survive and reproduce
  • these advantageous alleles can then be passed on to offspring and leads to evolution
• candidate genes

  • genes which are inherited and propose a vulnerability to certain characterisitcs or disorders
• neurochemistry of behaviour

  imbalance of certain neurotransmitters can cause mental disorders

  • increased dopamine in the brain can lead to schizophrenia