personality - bio and clinical Flashcards
hippocampus
forming and retrieving memories
experience affects size of hippocampus - taxi driver
nucleus accumbens
reward & motivation. effected by experience. winning can be addicting
amygdala
organize emotion. interpret emotional threats and rewards.
extraversion relates to amygdala activity. more social situation = more reward.
frontal cortex
higher order cognitive function.
emotion displays, attention short term memory, planning
big 5 and brain
measure personality scores and correlate with brain volume
grey matter and white matter
grey = more neurons
white = more axon connectivity
* brain is plastic*
extraversion and frontal cortex size
more extraverted, thicker cortex
conscientiousness
more hard working = thicker frontal gyrus
more neurotic
less thick area of prefrontal cortex
more neurotic
less thick hippocampus
5-HTTLPR gene
related to serotonin reuptake. less transporter = more 5-HT in synapse & more sensitive to negative emotion. . related to social outcomes
related to amygdala activity, more active, more sensitive to negative emotion
aggression MAOA
low MAOA males aggress more, more antisocial tendencies.
in social manipulation, exclusion caused aggressive behaviours.
evolution and personality
how natural selection affected that
gene variability. variability in fitness. more adaptive to hostile world
environment of evolutionary adaptedness
previous attitudes couldve been beneficial, passed on and still held even tho not relevant
big 5 extreme
E : pursuit of resource, risky N: avoid failure, mental illness C: get thigns done, compulsiveness A: smooth social intxn, loss of resource O: creative, high sex partners, higher rate of psych and affective disorder