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Towards a Formal Theory of a Distractor in Attentional Tasks

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  • Igor Utochkin

    (National Research University Higher School of Economics)

Abstract

The distractive effects on attentional task performance in different paradigms are analyzed in this paper. I demonstrate how distractors may negatively affect (interference effect), positively (redundancy effect) or neutrally (null effect). Distractor effects described in literature are classified in accordance with their hypothetical source. The general rule of the theory is also introduced. It contains the formal prediction of the particular distractor effect, based on entropy and redundancy measures from the mathematical theory of communication (Shannon, 1948). Single- vs dual-process frameworks are considered for hypothetical mechanisms which underpin the distractor effects. Distractor profiles (DPs) are also introduced for the formalization and simple visualization of experimental data concerning the distractor effects. Typical shapes of DPs and their interpretations are discussed with examples from three frequently cited experiments. Finally, the paper introduces hierarchical hypothesis that states the level-fashion modulating interrelations between distractor effects of different classes

Suggested Citation

  • Igor Utochkin, 2012. "Towards a Formal Theory of a Distractor in Attentional Tasks," HSE Working papers WP BRP 02/PSY/2012, National Research University Higher School of Economics.
    • Handle: RePEc:hig:wpaper:02psy2012
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