PSY 622 Lecture Notes - Lecture 2: Reuptake, Autonomic Nervous System, Impulsivity

• School: Ryerson University
• Department: Psychology
• Course: PSY 622
• Professor: Alasdair Goodwill

Document Summary

Nature vs nurture- it"s a (cid:272)o(cid:373)(cid:271)i(cid:374)atio(cid:374) of (cid:271)oth e(cid:448)e(cid:374) if (cid:449)e look at ho(cid:373)ozygoti(cid:272) genetics may reduce or magnify the effects of environmental risk factors. Evidence suggests childhood maltreatment contributes to development of asb e. g. , physical abuse, emotional abuse, sexual abuse, neglect. Child maltreatment and abuse: physical, emotional, sexual abuse can contribute. Mz 100% of genes differences in asb must be environmental (exact same genes) Look at mz twins reared together and reared apart effect of environment. Maoa enzyme and that enzyme is responsible fror breaking down: term with heightened level it has a counter effect. Less clear is why 50% of maltreated children do not engage in asb. Caspi and colleagues (2002) demonstrated an interaction between a specific gene maoa (monoamine norepinephrine (ne) serotonin (5-ht) - in short term it makes you feel good (feel good nt) but in long. Significantly lower levels of maoa found in those maltreated.