PSYCO104 Lecture Notes - Lecture 22: Operant Conditioning, Classical Conditioning

• School: University of Alberta
• Department: Psychology
• Course: PSYCO104
• Professor: Clayton Dickson

Document Summary

Reinforcement: any outcome that strengthens the probability of a response. Where the consequence consists of presenting something pleasant. Where the consequence consists of removing something unpleasant. Punishment: any outcome that weakens the probability of a response. Present and unpleasant stimulus to an animal when a particular action is performed. Take away a pleasant stimulus when a particular action is performed. A discriminative stimulus (s^d) is any stimulus that signals the availability of reinforcement. Performance of a behavior terminates an aversive stimulus. Performance of the behavior prevents the aversive stimulus from occurring. Shock (s^d): cross barrier (r) removal of shock (s^r) Light (s^d): cross barrier (r) avoidance of shock (s^r) Avoidance: learns that the light predicts the shock, doesn"t get shocked. Two processes involved in learning the avoidance response. Classical conditioning of a fear response to a cs. Light (ns) shock (us) fear (ur) Operant conditioning escape response to fear evoking s^d.