unit 7 Flashcards
motivation
a need or desire that energizes and directs behavior
instinct
a complex, unlearned behavior, that is rigidly patterned throughout a species
drive reduction theory
the idea that a physiological need creates an aroused tension state (a drive) that motivates an organism to satisfy the need
homeostasis
a tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry around a particular level
incentive
a positive or negative environmental stimuli that motivates behavior
optimum arousal theory
some motivated behaviors increase arousal
yerkes-dodson law
principle that performance increases with arousal only up to a certain point after which performance decreases
hierarchy of needs
maslow’s pyramid of human needs, beginning at the base with physiological needs that must first be satisfied before higher level safety needs and then psychological needs become active
glucose
the form of sgar that circulates in the blood and provides the major source of energy for body tissues
set point
the weight around which your brain tries to keep you
basal metabolic rate
the body’s resting rate of energy expidenture
ghrelin
made by an empty stomach
tells brain you’re hungry
insulin
made by pancreas
controls blood sugar
orexin
made by hypothalamus
triggers hunger
leptin
protein horomone made by fat cells
when there’s a lot, the brain decreases hunger and increases metabolism
PYY
made by digestive track
sends ‘not hungry’ signals
james-lange
stimulus - physiological arousal - emotional experience
schachter-singer
stimulus - physiological arousal - cognitive appraisal - emotional experience
cannon-bard
stimulus - physiological/emotional at same time
lazarus
stimulus - cognitive appraisal - physiological/emotional at same time
zajonc-ledoux
stimulus - emotional experience
stress
a condition in which the human system responds to changes in it’s normal, balanced state
stressor
anything that is perceived as challenging, threatening, or demanding