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Vision 2018, 2(3), 29; https://doi.org/10.3390/vision2030029

Stuck on a Plateau? A Model-Based Approach to Fundamental Issues in Visual Temporal-Order Judgments

Psychology, Paderborn University, 33098 Paderborn, Germany
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Received: 16 April 2018 / Revised: 7 June 2018 / Accepted: 5 July 2018 / Published: 16 July 2018
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Abstract

Humans are incapable of judging the temporal order of visual events at brief temporal separations with perfect accuracy. Their performance—which is of much interest in visual cognition and attention research—can be measured with the temporal-order judgment (TOJ) task, which typically produces S-shaped psychometric functions. Occasionally, researchers reported plateaus within these functions, and some theories predict such deviation from the basic S shape. However, the centers of the psychometric functions result from the weakest performance at the most difficult presentations and therefore fluctuate strongly, leaving the existence and exact shapes of plateaus unclear. This study set out to investigate whether plateaus disappear if the data accuracy is enhanced, or if we are “stuck on a plateau”, or rather with it. For this purpose, highly accurate data were assessed by model-based analysis. The existence of plateaus is confidently confirmed and two plausible mechanisms derived from very different models are presented. Neither model, however, performs well in the presence of a strong attention manipulation, and model comparison remains unclear on the question of which of the models describes the data best. Nevertheless, the present study includes the highest accuracy in visual TOJ data and the most explicit models of plateaus in TOJ studied so far.
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Keywords: temporal-order judgments; modeling; theory of visual attention; TVA; range of indecision; encoding reset temporal-order judgments; modeling; theory of visual attention; TVA; range of indecision; encoding reset
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    Doi: 10.24433/CO.b132a6d4-df50-4d2d-a2c8-6b0c3813f964
    Link: https://codeocean.com/2018/06/03/interactive-demonstration-of-plateau-generating-mechanisms-in-temporal-order-judgments-lpar-tojs-rpar/interface
    Description: This capsule provides an interactive demonstration of plateau-generating mechanisms in temporal order judgments (TOJs) to accompany our publication "Stuck on a Plateau? A Model-Based Approach to Fundamental Issues in Visual Temporal-Order Judgments". The TVA-reset model assumes a processing reset when the second stimulus is presented in brief succession after the first stimulus (assumed to equal TVA's t0 parameter). The alternative range of indecision model was proposed by García-Pérez & Alcalá-Quintana.
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Tünnermann, J.; Scharlau, I. Stuck on a Plateau? A Model-Based Approach to Fundamental Issues in Visual Temporal-Order Judgments. Vision 2018, 2, 29.

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