PSYC 305 Chapter Notes - Chapter 4: Reinforcement, Operant Conditioning, Sensory System
Document Summary
Sequence is repeated and eventually the dog salivates when it hears the bell (in anticipation of food) Identified four components that are now common terminology in classical conditioning: unconditioned stimulus (us, unconditioned response (ur, conditioned stimulus (cs, conditioned response (cr) Conditioned preference: organisms will approach stimuli that elicit positive emotional reactions, classical conditioning is often manifested as approach responses to stimuli associated with rewards. Lp during cs/(lp during cs + lp during equal period of time before cs: ratio of 0. 5 means no response reduction aka no conditioning, ratio of 0 would mean complete freezing durng cs and maximal conditioning. For humans: fear responses can be measured in changes in heart rate, bp, galvanic skin response: can also use a virtual environment with scary things. Conditioned taste aversion (cta): develops when consumption of a certain food was associated with gastric illness (vomiting: a food-nausea association causes cta even if it wasn"t the food directly that made them sick.
