Psychology 1000 Chapter Notes - Chapter 11: Pangs, Libido, Leptin

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Dr.Mike

Document Summary

Motivation: internal process that activate, guide and maintain behaviour over time (what drives our behaviour?) Motivation theory- innate tendencies (bird fly south, no thinking involved, this is their nature, aggression has been researched) Drive theory- biological needs create drive that pushes behaviour to reduce drive (homeostasis/equilibrium, cant explain starvation) Motivation= expectancy x incentive value (want to be a doctor) Maslow"s hierarchy of needs- (deficiency needs and growth needs, starving artist?) Glucose levels (sugar used by the body for energy, hungry= dip and spike in glucose) Peptides (cck)- when food reaches our small intestine, cck is released into the bloodstream and signals us to slow down/stop eating. Hormones (leptin)-decreases appetite more long term, doesn"t make us feel full, gain weight=more leptin, less hungry, lose weight=less leptin, more hungry. Nutritional content of the food- more nutrients=more full. Environmental factors- can create a disconnect from our body"s messages and eating, eat when bored. Bmi>30, overweight= bmi>25-30, 25% are obese, 50% are overweight.