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Activity of the ____________________ decreases heart rate and increases digestion.
Yerkes-Dodson Law
A theory suggesting that there is an optimal level of arousal for performance on any task; too little or too much arousal can impede performance.
Self-determination Theory
A psychological theory focused on motivation, concerning people's basic psychological needs for competence, relatedness, and autonomy.
Cannon's Theory
Also known as Cannon's fight-or-flight theory, it describes the body's automatic response to threatening or stressful situations.
Pleasure Principle
The driving force of the id that seeks immediate gratification of all desires, wants, and needs.
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