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Body Biochemistry
Brain chemicals & hormones have a profound effect on humans development
1. Disturbed balance of serotonin - depression and OCD
2. Excess dopamine - schizo, agg, add
3. Fight / flight - body becomes overloaded with cortisol/ adrenaline which makes our bodies prepare to deal with dangers & survive
Genetics & evolution
Genetics - genotype and phenotype, MZ twins
Evolution - physical traits and behavs that favourite survival in a species will survive because they are adaptive e.g. Giraffes
Biological Approach evaluation
1. Based on scientific methods of analysis so it is measurable
2. RLA - drugs to change chem balance & treat mental disorders, ECT- reboot the brain temporarily to calm down schizophrenic
3. Can't establish cause and effect
4. Deterministic
5. Nature but cant rule out nurture (MZ with same disorder)
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