7. motivation, emotion, and personality Flashcards
motivations
the reason or reasons one has for acting or behaving in a particular way
instinct theory of motivation
instinct drives behavior; behavior that helps preserve the individual and species is passed on
drive-reduction theory of motivation
internal deficiencies (drivers) push us to behave in such a way that we reduce the drives to maintain homestasis
incentives
behavior that is motivated by the “pull” of external stimuli, or incentives
optimal arousal theory
an individual’s performance peaks at optimal arousal
ex: test taking
yerkes-dodson law
elevated arousal levels can improve performance up to a certain point
maslow’s hierarchy of needs
incorporates the idea that we have various levels of needs including lower-level physiological and safety needs and higher-level social needs.
- self-actualization
- self esteem
- love and belonging
- safety
- phsyiological
glucose
the form of sugar that circulates in the blood and provides the major source of energy for the body tissues. when its levels are low, we feel hungry
what part of the brain integrates glucose messages and hunger pains?
the hypothalamus
four hormones involved in hunger
insulin, ghrelin, orexin, leptin, pyy
insulin (hormone)
location: pancreas
activity: controls blood glucose
ghrelin (hormone)
location: empty stomach
activity: “i’m hungry” signal
orexin (hormone)
location: hypothalamus
activity: hunger-triggering
leptin (protein hormone)
location: fat cells
activity: when abundant, causes brain to increase metabolism and decrease hunger
pyy
location: digestive tract
activity: “i’m not hungry signal”
set point
the point at which an individual’s ‘weight thermostat’ is supposedly set
basal metabolic rate
the amount of energy per unit of time that a person needs to keep the body functioning at rest
3 different situational influences on eating
social: eat more when you are with people
unit bias: when offered the larger amount you eat it
food variety: buffets
affiliation need
wanting to belong: the need to belong colors our thinking and emotions
social acceptance: a sense of belonging with others increases our self esteem. social segregation decreases it
maintaining relationships: we resist breaking social bonds, even bad ones
ostracism: social exclusion leads to demoralization, depression, and at times nasty behavior
emotion
psychological responses of the whole organism involving an interplay among physiological arousal, expressive behaviors, and conscious experience.
james-lange theory
the theory that our experience of emotion is our awareness of our physiological responses to an emotion-arousing stimulus:
stimulus, arousal, emotion
cannon-bard theory
the theory that an emotion-arousing sitmulus simultaneously triggers (1) phsyiological responses and (2) the subjective experience of emotion
two-factor theory
the schachter-singer theory that to experience emotion one must (1) be physically aroused and (2) cognitively label the arousal
how does lazarus explain emotions
emotion researcher richard lazarus conceded that our brain processes vast amounts of information without our conscious awareness and that some emotional responses do not require conscious thinking.
facial feedback effect
the tendency of facial muscle states to trigger corresponding feelings such as fear, anger, or happiness