The failure of a stimulus to elicit a CR when it is combined with another stimulus that already elicits the response is called:

Question

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Blocking occurs when a new stimulus is paired with a stimulus that already elicits a conditioned response (CR). The new stimulus will not elicit a CR on its own, even though it is paired with the original stimulus. This is because the original stimulus has already "blocked" the new stimulus from eliciting a CR.

The Failure of a Stimulus to Elicit a CR When