PSY100H1 Lecture Notes - Lecture 12: Drive Theory, Binge Eating, Homeostasis

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17 Apr 2013
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PSY100H1 Full Course Notes
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PSY100H1 Full Course Notes
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Motivation is what gives behavior its energy and direction. It determines how intensely and persistently we pursue it. We have basic biological needs that are essential for our survival. When we are deprived of a particular thing we need, we are driven to get it, there is a natural motivation to get it. When a need is not met, we are motivated (driven) to meet it. This necessitates a regulatory system to achieve a steady state (homeostasis) regarding the need. Think of a homeostatic system as the temperature in a thermostat: there is a set point (the desired temperature, there is a device for detecting deviations from the set point, there is a corrective mechanism (furnace comes on) In hunger: the set point = satiation, detecting deviation = nutrient detectors signal depletion, corrective mechanism = hunger and drive to eat.

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