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. 2015 Jun 26;15(4):787–807. doi: 10.3758/s13415-015-0367-2

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© The Author(s) 2015

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Task paradigm and behavioral results. (a) Trial types, stimulus sequence, and timing (top), and examples of congruent and incongruent trials (bottom). (b) The proportions of congruent/incongruent trials depended on the duration of the warning signal (WS). (c) Reaction times (RTs, left) and accuracy (right) for congruent (C) and incongruent (I) trials as a function of previous trial congruency (top) and cued conflict probability (bottom). Error bars represent ±1 SEM. (d) Delta plot showing conflict effects (current trial RT incongruent – congruent) as a function of quartiles of the RT distribution, for both low (white open circles) and high (black solid squares) conflict probability, collapsed over groups (i.e., irrespective of WS duration)