Attentional set refers to the bias to attend to restricted perceptual aspects of the environment. Organisms learn to attend to the sensory features and responses that are relevant to performing a task and ignore the features and responses that are irrelevant. When certain features and responses retain their relevance across tasks, an
"attentional set'' may develop that bias perception and responses and increases the speed of learning new tasks as long as those features and responses remain relevant.
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