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| a need or desire that energizes and directs behavior |
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| a complex behavior that is rigidly patterned throughout a species and is unlearned |
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| the idea that a physiological need creates an aroused tension state (a drive) that motivates an organism to satisfy the need |
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| 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 |
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| a positive or negative environmental stimulus that motivates behavior |
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| Maslow's pyramid of human needs, beginning at the base with physiological needs that must first be satisfied before higher-level safety needs and then psychological needs become active. |
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| the form of sugar that circulates in the blood and provides the major source of energy for body tissues. When its level is low, we feel hunger |
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| the point at which an individual's "weight thermostar" is supposedly set. When the body falls below this weight, an increase in hunger and a lowered metabolic rate may act to restore the lost weight |
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| the body's resting rate of energy expenditure |
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| the four stages of sexual responding described by Masters and Johnson--excitement, plateau, orgasm, and resolution |
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| a resting period after orgasm, during which a man cannot achieve another orgasm. |
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