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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 nees, 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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| hierarchy of needs (state) |
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| the form of sugar that circulates in the blood and provides the major source of energy for body tissues. When the level is low, we feel hunger |
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| the point at which an individual's "weight thermostat" |
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| the body's resting rate of energy expenditure |
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| an eating disorder in which a normal weight person (usually an adolescent female) diets and becomes significantly (15 percent or more) underweight, yet, still feeling fat, continues to starve |
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| an eating disorder characterized by episodes of overeating, usually of high-calorie foods, followed by vomiting, laxative use, fasting, or excessive exercise |
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| the four stages of sexual responding described by Masters and Johnson--excitement, plateau, orgasm, and revolution |
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| a resting period after orgasm, during which a man cannot achieve another orgasm |
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| a sex hormone, secreted in greater amounts by females than by males. In nonhuman female mammals, estrogen levels peak during ovulation, promoting sexual receptivity |
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| a problem that consistently impairs sexual arousal or functioning |
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| the most important of the male sex hormones. Both males and females have it, but the additional testosterone in males stimulates the growth of the male sex hormones in the fetus and the development of the male sex characteristics during puberty |
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| an enduring sexual attraction toward members of either one's own sex (homosexual orientation) or the other sex (heterosexual orientation) |
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| a desire for significant accomplishment: for mastery of things, people, or ideas; for attaining a high standard |
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