PSY 150 Lecture Notes - Lecture 9: Limbic System, Leptin, Ghrelin
Document Summary
Motivation: factors that energize, direct, and sustain behavior. Need: a state of biological or social deficiency. Need hierarchy: an arrangement of needs, in which basic survival needs must be met before people can satisfy their needs. Drive: a state that motivates us to engage in a behavior to satisfy a need. Basic biological drives, such as thirst and hunger, help animals maintain a stable condition. A stable condition is called equilibrium: we have a need for water, so, peanuts when you are at a bar creates a drive for thirst, thirst = buying more beer! Imagine yourself in a situation where you haven"t eaten all day The hungrier you are, the more driven you are to find food. Arousal: physiological activation (such as increased brain activity) or increased autonomic responses (such as increased heart rate, sweating, or muscle tension) The yerkes-dodson law describes the relationship between arousal, motivation, and performance.
