Briefly describe the temperament of three different infants along three dimensions. List four aspects of personality that are believed to have evolved in humans. For each, explain why this characteristic has been adaptive in the past and whether it continues to be adaptive today. Range from high of .75 for concrete vs. abstract thinking and .60 for restrained or sober vs. enthusiastic down to .10 for conservative vs. liberal and relaxed vs. tense. D. Eysenck s dimensions assumed to be biologically based.
Extraverts have lower levels of arousal than introverts for the same stimulus.
Introverts can become overstimulated. Those high in Neuroticism are more easily conditioned to emotional stimuli. Those high in Psychoticism have less control over emotional reactions. E. Big Five. Range from .46 for heritability of Openness to .28 for Agreeableness and Conscientiousness.