just cited, the animal failed to attend to B because B added no information to that supplied by A. If true, this interpretation is an important insight into attentional processing, but this conclusion remains uncertain because blocking and several related phenomena can be explained by models of conditioning that do not invoke attention.

Divided attention

Attention is a limited resource and is not a none-or-all response: the more attention devoted to one aspect of the environment, the less is available for others. A number

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