Psychology / Unit 5 Psych 0532 short lesson, about 20 seconds
Contingency in Conditioning
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The idea
Conditioning depends on how reliably the conditioned stimulus predicts the unconditioned stimulus, not merely on how often they occur together.
In practice
Rescorla showed that a tone followed by shock only half the time conditions weakly, even with many pairings.
Your place on the trail
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