html5-img
1 / 14

Instincts, Drives, and Hunger

Instincts, Drives, and Hunger. Instincts. A pattern of behavior that is passed on through a species that can’t be unlearned Building nests Swimming upstream Migration Rooting. Drives. An aroused state of tension motivating a course of action You are driven to fulfill physiological needs

ratana
Download Presentation

Instincts, Drives, and Hunger

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Instincts, Drives, and Hunger

  2. Instincts • A pattern of behavior that is passed on through a species that can’t be unlearned • Building nests • Swimming upstream • Migration • Rooting

  3. Drives • An aroused state of tension motivating a course of action • You are driven to fulfill physiological needs • Plan to get food, avoid pain, etc.

  4. Drive-Reduction Theory • You have a need: food/water • You have a drive: hunger/thirst • You have a drive reducing behavior: eating/drinking

  5. Incentives • Positive or negative environmental stimulus that motivates behavior • Physical attraction • Fear of disapproval • Scholarships • Failure

  6. Ancil Keys • WWII Prison Camps • Fed enough to maintain initial weight, then cut food supplies in half • The men became obsessed with food • Nothing else was important

  7. Physiology of Hunger • Walter Cannon – swallowed balloon to see if stomach contractions & hunger pangs were related • He had stomach contractions when he felt hungry

  8. Body Chemistry and the Brain • The hypothalamus has two centers within that help control eating • Lateral hypothalamus (LH) brings on hunger • Ventromedial hypothalamus (VM) depresses hunger

  9. Hormones and Pills • Scientists know of hormones and proteins that stimulate hunger and depress hunger (leptin, ghrelin, PPY) • Trying to find a miracle pill to work with these to regulate weight

  10. Set Point Theory • Older theory • Body’s weight thermometer • If you eat too much, you body is supposed to stop at your set point • Same thing happens of you don’t eat enough

  11. Basal Metabolic Rate • In order to maintain our bodies’ set point, our bodies need to maintain their basal metabolic rate • Too much food – fidget • Too little food – slow down body process

  12. Cultures shape “beauty” - thin Men/women views of what’s thin Eating Disorders

  13. Anorexia • Normal sized people become obsessed with losing weight • Continues to feel fat • Diets turn to starvation • At least 15% below normal body weight

  14. Bulimia • Quick fix to lose weight • Binge eat high calorie foods followed by: • Vomiting • Laxative use • Fasting • Excessive exercise

More Related