chapter 9 Flashcards
wants, needs, interests, and desires (motivation involves goal-directed behavior)
Motives
hypothetical, internal state of tension that motivates an organism to engage in activities that should reduce this tension (disruptions of equilibrium)
A drive
person is motivated to pursue actions that will lead to drive reduction
Experiencing A Drive
external goal that has the capacity to motivate behavior
incentive
A on a test, ice cream, a juicy steak, a monetary prize
Incentives
internal states push people in certain directions
Drive Theories
emphasize how external stimuli pull people in certain directions
Incentive Theories
those who take on an evolutionary perspective argue that natural selection favors behaviors that maximize reproductive success (passing on genes to the next generation)
Evolutionary Theories
need for belongingness (adaptive benefits)
Affiliation motive
verified what most people have noticed based on casual observation: there is an association between stomach contractions and the experience of hunger (theorized the contractions CAUSE hunger)
Walter Cannon and A. L. Washburn
Lab animal research shows that experience of hunger is controlled in which area of the brain
Hypothalamus
Lateral hypothalamus destroyed?
no interest in eating
ventromedial nucleus of hypothalamus destroyed?
Ate excessively
Today, it is believed that the ______ nucleus and…
arcuate
the ___________ nucleus play a larger role in modulation of hunger
paraventricular
carries information about the stretching of the stomach walls that indicates whether the stomach is full
Vagus Nerve
causes stomach contractions and promotes hunger.
Ghrelin
long-term regulator of hunger as well as regulation of numerous other functions. produced by fat cells and released into the bloodstream. It provides the hypothalamus with information about body’s fat stores
Leptin
hormone secreted by the pancreas is also sensitive to fluctuations in the body’s fat stores.
insulin
better the food tastes, the more consumed
Palatability
powerful determinant of amount eaten is amount available. More food people are served, the more they will eat.
Quantity Available
humans and animal increase their consumption when there is a greater _______ of foods available.
Variety
Taste preferences are a partial function of learned associations through
Classical Conditioning