Attentional Selectivity in Short‐term Memory: Similarity of Process, Not Similarity of Content, Determines Disruption

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Abstract
Background sound substantially disrupts serial recall, even under conditions where participants are explicitly told to ignore it. Study of such a phenomenon may serve to illuminate the manner in which information from various sources interacts in memory, as well as the extent to which unattended information is processed. A review of the literature is presented that points to a number of conclusions. First, that interference occurs in memory, not on the basis of similarity of content between relevant and irrelevant material, but rather on the basis of similarity of process. Specifically, in a serial recall task, the key memory process is that of order retention, and therefore, order information in the sequence of auditory events interferes with the process of ordering within the rehearsal set. Second, that organisation and interference within memory are intimately connected with perceptual processes.

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