The Biological Approach

BIOLOGICAL APPROACH

GENES : inheritance (family studies) and twin studies 

Monozygotic twins- identical - higher overlap of having OCD (87% concordance rate)

Dizygotic twins - 50% genes

CONCORDANCE RATES- the probability of both twins having a aprticular trait if one of the pair does

GENOTYPE: a set of genes- genetic makeup 

PHENOTYPE: the characteristics displayed as an interaction between the expression of the genotype and the environment 

EVOLUTION: inherited characteristics ; survival of the fittest ; natural selection ; adaption

We are a product of ancestors who have had certain characteristics that's allowed them to survive - we act how we act…