1. Motivation Vocab 8a

2. = a need or desire that energizes and directs behavior.

3. Motivation

4. = a complex behavior that is rigidly patterned throughout a species and is unlearned.

5. Instinct

6. the idea that a physiological need creates an aroused tension state (a drive) that motivates an organism to satisfy the need.

7. Drive-reduction Theory

8. = 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.

9. Homeostasis

10. = a positive or negative environment stimulus that motivates behavior

11. Incentive

12. 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.

13. Hierarchy of Needs

14. = principle that says we all have our ultimate arousal point
= principle that says we all have our ultimate arousal point. If a task is too hard then we might under perform. If a task is too easy we will also under perform. But the easiness and hardness of the task is up to the individual

15. Yerkes Dodson Law

16. = 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.

17. Glucose

18. = the point at which an individual’s “weight thermostat” 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.

19. Set Point

20. = the body’s resting rate of energy expenditure.

21. Basal Metabolic Rate

22. = an eating disorder in which a person (usually an adolescent female) diets and becomes significantly (15 percent or more) underweight, yet, still feeling fat, continues to starve.

23. Anorexia Nervosa

24. = an eating disorder characterized by episodes of overeating, usually high-calorie foods, followed by vomiting, laxative use, fasting, or excessive exercise.

25. Bulimia Nervosa

26. = significant binge-eating episodes, followed by distress, disgust, or guilt, but without the compensatory purging, fasting, or excessive exercise that marks bulimia nervosa.

27. Binge-eating Disorder

28. = the four stages of sexual responding described by Masters and Johnson – excitement, plateau, orgasm, and resolution.

29. Sexual Response Cycle

30. = a resting period after orgasm, during which a man cannot achieve another orgasm.

31. Refractory Period

32. = sex hormones, such as estradiol, secreted in greater amount by females than males and contributing to female sex characteristics. In nonhuman female mammals, estrogen levels peak during ovulation, promoting sexual receptivity.

33. Estrogens

34. = the most important of the male sex hormones
= 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 organs in the fetus and the development of the male sex characteristics during puberty.

35. Testosterone

36. = an enduring sexual attraction toward members of either one’s own sex (homosexual orientation) or the other sex (heterosexual orientation).

37. Sexual Orientation