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Chunking by colors: Assessing discrete learning in a continuous serial reaction-time task

par Jiménez, Luis;Méndez, Amavia;Pasquali, Antoine ;Abrahamse, Elger;Verwey, Willem
Référence Acta psychologica, 137, 3, page (318-329)
Publication Publié, 2011-07

Article révisé par les pairs

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Résumé :

Chunk learning (the process by which a sequence is learned and retrieved from memory in smaller, decomposed units of information) has been postulated as the main learning mechanism underlying sequence learning (Perruchet & Pacton, 2006). However, the evidence for chunk formation has been elusive in the continuous serial reaction-time task, whereas other continuous, statistical processes of learning account well for the results observed in this task. This article proposes a new index to capture segmentation in learning, based on the variance of responding to different parts of a sequence. We assess the validity of this measure by comparing performance in a control group with that of another group in which color codes were used to induce a uniform segmentation. Results showed that evidence of chunking was obtained when the color codes were consistently coupled to responses, but that chunking was not maintained after the colors were removed. © 2011 Elsevier B.V.