operant conditioning: skinner’s radical behaviorism
TRANSCRIPT
Operant Conditioning: Skinner’s Radical
Behaviorism
Objectives
• Respondents and operants• The basics of operant learning• Effects of different schedules of
reinforcement• The nature and uses of punishment• Possible origins of superstition• What is meant by terms like fading,
generalization, discrimination, aversive control, and rat
Skinner’s Radical Behaviorism: An Overview
• Basic assumptions– Human behavior follows certain laws– Causes of behavior are outside the
person
• Operant conditioning• The experimental analysis of
behavior
Skinner’s Radical Behaviorism: An Overview
• Respondent and Operant Learning– Respondent: response elicited by a stimulus– Operant: response simply emitted by an
organism
• Prevalence of Operant Behavior• Charles Darwin’s Influence
Skinner’s Radical Behaviorism: An Overview
• Pavlov’s Harness and Skinner’s Box
Skinner’s Radical Behaviorism: An Overview
• Operant Learning– Discriminative stimulus
• Not S-R Learning
Positive and Negative Reinforcement
• Positive reinforcement– Satisfying consequence(contingency) of
a behavior
• Negative reinforcement– Elimination or prevention of annoying
outcome
Punishment
• Two types of punishment– Positive punishment occurs when a
positive contingency is removed– Negative punishment is where a
negative contingency follows a behavior
• Punishment versus negative Reinforcement
Illustration of Reinforcement and Punishment
• Positive Reinforcement (Reward)• Negative Reinforcement (Relief)• Presentation Punishment (Castigation)• Removal Punishment (Penalty)
Primary and Secondary Reinforcers
• Primary reinforcers– Events that are reinforcing without any
learning having taken place
• Secondary reinforcers– Events that are not reinforcing to begin
with but become reinforcing as a result of being paired with other reinforcers
• Generalized reinforcer– Learned reinforcer that appears to
reinforce any of a wide variety of behaviors
Continuous or Intermittent Reinforcement
• Interval or Ratio Schedules• Fixed or Random Schedules• Superstitious Schedules
Effects of Different Reinforcement Schedules
• Cumulative Recording
Effects of Different Reinforcement Schedules
• Effects of Schedules on Acquisition• Effects on Extinction
Effects of Different Reinforcement Schedules
• Spontaneous Recovery
• Extinction and Forgetting– Extinction: outcome is a relatively rapid
cessation of the responses in question– Forgetting: much slower process that also
results in the cessation of a response
Effects of Different Reinforcement Schedules
• Effects on Rate of Responding
Shaping and Chaining• Shaping is the technique used to train animals
to perform acts that are not ordinarily in their repertoire
• Method involving the differential reinforcement of successive approximations
• Chaining is the linking of sequences of responses
• Chains in Shaping– Differentially reinforcing certain responses leading
to the final and complete sequence of responses• Shaping in Human Learning
Fading, Generalization, and Discrimination
• Fading: a process that involves both generalization and discrimination
• Generalization: making similar responses in different situations
• Discrimination: making different responses in similar but discriminably different situations
Relevance to Human Learning
• Generalization and Discrimination
Applications of Operant Conditioning
• Instructional Applications of Positive Contingencies
• The premack principle– Behavior modification
Applications of Aversive Consequences
• The case against punishment• Less objectionable forms of
punishment– Time out– Response cost– Reprimands
• The case for punishment• Negative reinforcement
Other Applications: Behavior Management
• Positive reinforcement and punishment
• Counterconditioning– Psychotherapy
• Extincition• Extinction using noncontingent
reinforcement
Skinner’s Position: An Appraisal
• Master builder of psychology• His system is a well-defined, highly
researched, clear and understandable one.
• Some Philosophical Objections– Operant conditioning does not explain
symbolic processes– His attempts to explain language through
reinforcement theory is not satisfying– He negleted the role of biology in learning
Summary
• Skinners’ radical behaviorism• Operant learning• Reinforcement and schedules– Extinction and forgetting
• Applications of operant conditioning