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Instinct
________:** a complex behavior that is rigidly patterned throughout a species and is unlearned.
Yerkes Dodson
________ law:** the principle that performance increases with arousal only up to a point, beyond which performance decreases.
Incentive
________**: a positive or negative environmental stimulus that motivates behavior.
Glucose
________:** the form of sugar that circulates in the blood and provides the major source of energy for body tissues.
Human motivation
________ aims not to eliminate arousal but to seek optimum levels of arousal.
Motivation
________**: a need or desire that energizes and directs behavior.
Leptin
________: Protein hormone secreted by fat cells; when abundant, causes the brain to increase metabolism and decrease hunger.
Orexin
________: Hunger- triggering hormone secreted by the hypothalamus.
Genes
________ do predispose some species- typical behavior.
PYY
________: Digestive tract hormone; sends "Im not hungry "signals to the brain.
Ghrelin
________: Hormone secreted by the empty stomach; sends "Im hungry "signals to the brain.
Homeostasis
________**: a tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level.
Insulin
________: Hormone secreted by the pancreas; controls blood glucose.
Instinct theory
________ (now replaced by the evolutionary perspective) focuses on genetically predisposed behaviors.
Drive Reduction Theory
________:** the idea that a physiological need creates an aroused state (a drive) that motivates an organism to satisfy the need.
complex interaction of appetite hormones
The ________ and brain activity helps explain the bodys predisposition to maintain a particular weight.
Blood vessels
________ connect the hypothalamus to the rest of the body, so it can respond to our current blood chemistry and other incoming information.
Arousal theory
________ focuses on finding the right level of stimulation.
Physiological needs
________ (such as for food or water) create an aroused, motivated state- a drive (such as hunger or thirst)- that pushes us to reduce the need.
Drive reduction
________ is one way our bodies strive for homeostasis.
complex behavior
To become an instinct, a(n) ________ must have a fixed pattern throughout a species and be unlearned.
Instincts
________ can not explain most human motives the main assumption endures in evolutionary psychology.
Instinct theory
________ viewed our instincts as the source of our motivation.
Drive reduction theory
________ focuses on how we respond to our inner pushes.
