PSYC3102 Lecture Notes - Lecture 2: Biopsychosocial Model, Biomedical Model, Proband
Document Summary
Models of psychopathology: biological (physiological, neurochemical factors, psychodynamic (internal unconscious factors, humanistic/existential (internal conscious factors, behavioural (interaction of social & psychological factors, cognitive (cognitions) There is no single explanation for why behaviour occurs. If mz = dz and both show high concordance; shared environmental contributions. Is one allele more frequently seen in people with the disorder than in people without the disorder: apoe-e4: 37% with ad vs. 14% in general population, genome wide association studies, assess common variation across the entire genome. The biomedical model: biochemistry as aetiology, neuroanatomy as aetiology, endocrine system as aetiology. The anatomic structure of the neuron, or nerve cell. Neurotransmitters: chemicals released into the synapse between two neurons that carry signals from the terminal bouton of one neuron to the receptors of another. Biochemistry as aetiology: most drug therapies increase or decrease the activity of specific neurotransmitters, but: neurotransmitter systems have very broad effects, four neurotransmitter systems, serotonin, regulates behaviour, mood & thought processes.
