Biological approach

Question 1

Assumption of Biological approach

Answer 1

everything psychological is biological at first. Human behaviour is determined by biological structures, genes, neurochemistry.

Question 2

Genetic basis of behaviour

Answer 2

Twin studies are used to check if certain traits have a genetic basis. They do this by comparing concordance rates of MZ twins (identical) and DZ twins (non-identical) . If MZ twins have higher concordance rate then DZ it suggests that the trait has a genetic basis. This is because MZ twins share 100% of their genes while DZ share 50%.

Question 3

Genotype

Answer 3

Person’s genetic make up

Question 4

phenotype

Answer 4

Observable characteristics which are determined by genes and environment

Question 5

evolution

Answer 5

changes in the inherited characteristics in a biological population over successive generations.

Question 6

what is natural selection

Answer 6

genetically determined behaviour that increases survival advantage and reproduction gets passed onto offspring. So more likely to stay into gene pool whereas those who do not survive and reproduce they do not stay in the gene pool.