Attention switching (Internal vs Eternal).pdf - Journal of Experimental Psychology Human Perception and Performance Attentional Flexibility Is

Attention switching (Internal vs Eternal).pdf - Journal of...

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Journal of Experimental Psychology: Human Perception and Performance Attentional Flexibility Is Imbalanced: Asymmetric Cost for Switches Between External and Internal Attention Sam Verschooren, Baptist Liefooghe, Marcel Brass, and Gilles Pourtois Online First Publication, July 25, 2019. CITATION Verschooren, S., Liefooghe, B., Brass, M., & Pourtois, G. (2019, July 25). Attentional Flexibility Is Imbalanced: Asymmetric Cost for Switches Between External and Internal Attention. Journal of Experimental Psychology: Human Perception and Performance . Advance online publication.
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Attentional Flexibility Is Imbalanced: Asymmetric Cost for Switches Between External and Internal Attention Sam Verschooren, Baptist Liefooghe, Marcel Brass, and Gilles Pourtois Ghent University Whereas the effects of attention switches occurring within perception or memory are relatively well understood, much less is known about switches of attention between them. We discuss the methodolog- ical limitations of initial research on this topic, which was never integrated with the broader cognitive literature. On the basis of this discussion, we present here a new paradigm, in which participants performed a simple probe-to-target matching task where targets were either perceived on screen or retrieved from memory. Across successive trials, repetitions or alternations (in both directions) between these 2 conditions were created, and eventually compared with each other. In line with our prediction, derived from the assumption of a top-down control mechanism, we found a cost for switching between external and internal attention in Experiment 1. Furthermore, this switch cost was asymmetric, being substantially larger when switching from (external) perception to (internal) memory than the other way around. In Experiments 2–4, we ruled out an imbalance in practice, learning, and preparation as confounds for this asymmetry. We propose that switches of attention between internal and external information are underpinned by a supervisory attention control mechanism, and that this asymmetry can be explained in terms of priming, associative interference or memory retrieval. Public Significance Statement This study sheds light on the remarkable cognitive ability that allows to switch attention rapidly between external information available in the environment and internal representations held in memory. Results show that it is more difficult to switch to internally stored information stored in memory when beforehand one processes external competing information than the other way around. We discuss this cost asymmetry in the light of different theoretical frameworks compatible with it. Keywords: attention, flexibility, memory, perception, generalized linear mixed model Supplemental materials: Humans maintain a seemingly rich mental representation of their external environment, as is amply demonstrated in research on perception (Simons & Chabris, 1999) and memory (Schacter, Addis, & Buckner, 2007). Whereas perception depends on the
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  • Fall '16
  • Baoyu Wang
  • Nature, The Trial, American Psychological Association, Network switch, Externality, Modality, Generalized linear mixed model

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