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Perceptual similarity induces overinvestment in an attentional blink task.
Psychological Research 2018 November
The overinvestment account of the attentional blink (AB) posits that the AB results from the allocation of more resources than necessary to encode a first target (T1), which in turn lowers the resources available to encode a second target (T2) shortly thereafter. Across two experiments, we examined whether resource allocation to T1, and thus overinvestment that results in an AB effect, might be limited by perceptual mechanisms that evaluate the need for encoding resources. The key result observed in both experiments was that a relatively easy to encode T1 can nonetheless result in an AB when it is perceptually similar to a more difficult to encode T1. The importance of experimental context as an influence on the allocation, or overinvestment, of attentional resources to T1 is highlighted by these findings.
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