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Instrumental Condtioning & PREE. What is instrumental conditioning?  Modification of behavior by its consequences  Outcome is dependent upon the behavior.

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Presentation on theme: "Instrumental Condtioning & PREE. What is instrumental conditioning?  Modification of behavior by its consequences  Outcome is dependent upon the behavior."— Presentation transcript:

1 Instrumental Condtioning & PREE

2 What is instrumental conditioning?  Modification of behavior by its consequences  Outcome is dependent upon the behavior  e.g. lever-pressing

3 Reinforcement  Positive Stimulus whose presentation as a result of behavior increases the likelihood of the behavior occurring again in the future e.g. food  Negative Stimulus whose removal as a result of behavior increases the likelihood of the behavior occurring again in the future e.g. removal of uncomfortable conditions

4 Schedules of Reinforcment  Continuous  Intermittent Variable Fixed Ratio Interval

5 Partial-Reinforcement Extinction Effect  Animals that are partially reinforced show a greater resistance to extinction than animals that are continuously reinforced i.e. take longer to meet extinction criterion

6 Partial-Reinforcement Extinction Effect

7 Theories of PREE  Frustration  Sequential

8 Sniffy the Rat

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