Biological Approach

• 5 main branches of the biological approach:

  • neurochemical basis of behaviour
  • brain structure basis of behaviour
  • genetic basis of behaviour
  • relationship between genotype and phenotype
  • evolution of behaviour
• Strengths of the Biological Approach:

  • Brain scans allow investigation into how the structure relates to the function, allowing unobservable factors to be taken into account.
  • High internal validity- use of scientific experimental methods increases replicability and reliability, which means cause and effect can be established.
• Limitations of the Biological Approach:

  • Doesn't fully account for the influence of our environment and other individuals on our behaviour