Biologicial Approach

Question 1

What are the assumptions of the biological approach?

Answer 1

Assumes all behaviour has a biological origin
• important to understand all biological structures to fully understand human behaviour

Question 2

What is the influence of genes on human behaviour

Answer 2

• genotype - genetic makeup
• phenotype - expression of genes
Phenotype is influenced by genetic inheritance and interaction of it with the environment.

Question 3

Why are twins used in the biological approach?

Answer 3

Twins share 100% or 50% of DNA
• compare concordance rate of MZ (identical twins) and DZ (non-identical)
• eg MZ twins have an increased CR of developing schizophrenia
• MZ twins have a higher concordance rate showing a genetic element into behaviour

Question 4

What is the influence of evolution on behaviour?

Answer 4

Natural selection ensures that characteristics providing an advantage are passed from one generation to the next.

Question 5

What is the influence of neurochemicals on behaviour?

Answer 5

Imbalances of neurotransmitters at the synapse such can influence behaviour.
• serotonin - depression
• dopamine - schizophrenia

Question 6

Evaluation of biological approach?

Answer 6

• biologically determinism
  • evolution
  • unfalsifiable
  + real world application
  • drug therapies - antidepressants
  • takes blame off patient as it provides an explanation