Psychology Approaches - Biological Approach

• Biological approach

  Suggests that everything is innate and governed by biology
• Twin studies

  • Used to ascertain whether a behaviour has a genetic basis
  • Comparing concordance rates between monozygotic and dizygotic twins can determine if a behaviour has a genetic basis
• Phenotypes

  Observable characteristics of an individual, consequence of interactions between genotype and environment
• Genotype

  Collection of inherited genetic material passed from generation to generation
• Theory of natural selection

  Proposed by Darwin, states that genetic material that aids survival is passed on to offspring, leading to survival of those with beneficial alleles