According to the Rescorla-Wagner model, blocking occurs because when the second (blocked) CS is
presented, most of the learning that can occur has already been "used up" by the first CS.

Question

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The Rescorla-Wagner model proposes that the amount of learning that can occur with a particular CS depends on the strength of the prediction error that the CS generates, and this prediction error is shared between all cues present during that time. Therefore, when a second (blocked) CS is presented together with a first (previously reinforced) CS, most of the available prediction error has already been "used up" by the first CS, leading to a weaker learning signal for the second cue. This is the mechanism that underlies the phenomenon of blocking.

According to the Rescorla-Wagner Model, Blocking Occurs Because When the Second