Motivation and Emotion Flashcards
Motivation
Psychological processes that arouse, direct and maintain behaviour towards a goal.
Drive Reduction Theory
Needs produce a state of tension called a drive
Homeostasis
Maintenance of physiological systems at normal level
Optimum-level Theory
Behaviour directed to restore level of arousal to an optimal level. Based on conditioning principles.
Incentive Theories
External stimuli regulate motivational states.
Push (drive) versus pull (incentive)
- internal (often biological) drives push
- external (environmental) stimuli pull
Hunger and Eating
Hypothalamus
Lateral, start mechanism; ventromedial, stop mechanism.
Glucostatic Theory
Fluctuations in blood glucose level monitored by the brain.
Glucostats
Monitor a cell’s uptake of glucose from the blood
- located in liver, signals to hypothalamus.
Hunger and Eating
Hormones
Insulin: (up) levels of contribute to hunger
Leptin: secreted by fat cells that have absorbed triglyceride
- profound effects on metabolism and eating
- anti obesity hormone
Cholecystokinin (CKK)
A hormone released when food enters digestive system
Stomach contains receptors for quantity and quality
Food preferences
Roast dog versus fresh maggots
Innate preferences and observational learning
Set point
A natural point of stability in body weight.
Obesity —> elevated set point
Dietary Restraint
Vacillations in dietary restraint lead to obesity
Restrained eaters: constantly control eating impulses, feel guilty when they fail
Disinhibited when they fail
Estrogens
Female gonadal hormones
Estrogen levels do not correlate well in women
Androgens
Male gonadal hormones
Prenatal organizational effects
Activation effects during adulthood
Androgens related to sexual motivation for both sexes