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Miriam Debraise

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titre
A Time-Based Resource-Sharing Account of Switching Costs between : Processing and Storage in Working Memory
auteur
Miriam Debraise
article
Psychology. Université Côte d'Azur, 2021. English. ⟨NNT : 2021COAZ2014⟩
annee_publi
2021
resume
Working memory allows the temporary storage and processing of a limited amount ofinformation. According to the Time-Based Resource-Sharing Model, working memoryfunctions by rapidly switching between processing and storage activities. The complex spantasks generally used to evaluate this process require this rapid alternation. The task involvesa primary memory task interspersed with a secondary processing task designed to directattention away from the memory task. The present dissertation aimed at manipulatingthe structure of the complex span task to examine as-yet untested predictions from theTBRS. I first identified in the literature two types of structures across the available complexspan tasks. The unnoticed difference (at least conceptually) between the two types of tasksrelies on whether the task begins with a processing episode (that captures attention) orby a storage episode (that requires the encoding of a to-be-recalled item). After providingevidence that this discrepancy does have an influence on the estimate of working memorycapacity, I pursue my exploration of more subtle induced variations of task structure onworking memory performance. I argue that how processing and maintenance activitiesare distributed within a concurrent task may induce switching costs in working memoryperformance that have gone unnoticed in past and current experimental studies. Switchingcosts are induced by any kind of multitasking situations that complex span tasks shouldnot be exempt of. We tested whether switching costs could be implemented into the TBRSto improve fit to the data. For this purpose, we used complex span tasks that involvedelementary processing steps presented at a predefined pace to manipulate switch costs.The number of switches was manipulated by the use of different rhythmic patterns withinthe concurrent task. The results showed that these patterns can slightly influence workingmemory performance in some cases but not in others. However, the rhythmic patterns usedin our secondary tasks may have introduced a confound variable as some of the patternscontaining fewer alternations between maintenance and processing also introduced longerdelays of free time, hence possibly enhancing the consolidation of the memoranda. Alast part of the thesis addresses this confound using rhythmic patterns designed to testspecifically the switching cost and the consolidation accounts. We conclude that the TBRSin its original form offers a satisfying fit of the data.
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https://tel.archives-ouvertes.fr/tel-03357655/file/2021COAZ2014.pdf BibTex
titre
Working memory complex span tasks and fluid intelligence: Does the positional structure of the task matter?
auteur
Miriam Debraise, Nicolas Gauvrit, Fabien Mathy
article
Psychonomic Bulletin & Review, 2020, pp.1--11
annee_publi
2020
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