PSY100H1 Lecture Notes - Lecture 7: Fire Hydrant, Classical Conditioning, Stimulus Control

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25 Jan 2013
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Department
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Behaviour Modification – Lecture 7
Chapter 7 – Stimulus Control: Discrimination and Generalization
How do we learn to perform certain behaviours at certain times but not others?
Critical Questions
What is an antecedent stimulus and how is it involved in stimulus control of operant
behaviour?
How is stimulus control developed through stimulus discrimination training?
What is the three-term contingency?
What is generalization and how does it differ from discimination?
Reinforcement
Behaviour is reinforced in specific circumstances (when specific antecedents are present)
Outcome: Behaviour is more likely to occur in the future in similar circumstances
Extinction
Behaviour is no longer reinforced when it occurs in specific circumstances (when specific
antecedents are present)
Outcome: Behaviour stops occuring in the future in similar circumstances
Punishment
Behaviour is punished in specific circumstances (when specific antecedents are present)
Outcome: Behaviour stops occurring in the future in similar circumstances.
3-Term Contingency (A-B-C's of Operant Behaviour)
Antecedent
Behaviour
Consequence
Contingency of reinforcement
What is a contingency of reinforcement?
The reinforcement follows the behaviour and not the other way around.
The consequences of a given behaviour are controlled by the antecedents or specific
circumstances in the environment. We're focusing only on the antecedents. The
functional relationship among the different components.
A → B → C
Ex: Phone rings → Pick it up → Talk to someone
Phone doesn't ring Pick it up → No one there
Outcome: You are more likely to pick up the phone when it rings but not when it
is not ringing.
With frends → tell stories → friends laugh
With parents → tell stories → no laughs – maybe reprimands
Outcomes: You are more likely to tell stories to friends but not to parets.
Overall what's taking place is stimulus discrimination training
Stimulus Discrimination Training:
Reinforce the target behaviour in the presence of 1 specific antecedent
Notation: S
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