Competition for cognitive resources during rapid serial processing : changes across childhood

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2011
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Wirth, Nadine
Keil, Andreas
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Frontiers in Psychology ; 2 (2011). - 9. - Frontiers Research Foundation. - eISSN 1664-1078
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The ability to direct cognitive resources to target objects despite distraction by competing information plays an important role for the development of mental aptitudes and skills. We examined developmental changes of this ability in a cross-sectional design, using the “attentional blink” (AB) paradigm. The AB is a pronounced impairment of T2 report, which occurs when a first (T1) and second target (T2) embedded in a rapid stimulus sequence are separated by at least one distractor and occur within 500 ms of each other. Two groups of children (6- to 7-year-olds and 10- to 11-year-olds; ns = 21 and 24, respectively) were asked to identify green targets in two AB tasks: one using non-linguistic symbols and the other letters or words. The temporal distance or stimulus-onset asynchrony (SOA) between T1 and T2 varied between no intervening distractor (Lag 1, 116-ms SOA) and up to 7 intervening distractors (Lag 8, 928-ms SOA). In the symbol task, younger children linearly increased T2 identification with increasing lag. Older children, however, displayed a hook-shaped pattern as typically seen in adults, with lowest identification reports in T2 symbols at the critical blink interval (Lag 2, 232-ms SOA), and a slight performance gain for the Lag 1 condition. In the verbal task, the older group again exhibited a prominent drop in T2 identification at Lag 2, whereas the younger group showed a more alleviated and temporally diffuse AB impairment. Taken together, this pattern of results suggests that the control of attention allocation and/or working memory consolidation of targets among distractors represents a cognitive skill that emerges during primary school age.
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150 Psychologie
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ISO 690HEIM, Sabine, Nadine WIRTH, Andreas KEIL, 2011. Competition for cognitive resources during rapid serial processing : changes across childhood. In: Frontiers in Psychology. Frontiers Research Foundation. 2, 9. eISSN 1664-1078. Available under: doi: 10.3389/fpsyg.2011.00009
BibTex
@article{Heim2011Compe-51224,
  year={2011},
  doi={10.3389/fpsyg.2011.00009},
  title={Competition for cognitive resources during rapid serial processing : changes across childhood},
  volume={2},
  journal={Frontiers in Psychology},
  author={Heim, Sabine and Wirth, Nadine and Keil, Andreas},
  note={Article Number: 9}
}
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