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. 2017 Jan;146(1):63–76. doi: 10.1037/xge0000245

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© 2017 The Author(s)

This article has been published under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Copyright for this article is retained by the author(s). Author(s) grant(s) the American Psychological Association the exclusive right to publish the article and identify itself as the original publisher.

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(a) Alternation rate pre and postexposure for each of the chunking conditions. The largest reduction in alternation rate was in the 2 × 100 group and the smallest in the 40 × 5 group. (b) Ratio of runs of length 4 to runs of length 3 plus an alternation for sequences produced in each condition (this includes HHHH:HHHT and TTTT:TTTH). The 2 × 100 condition saw the largest increase in ratio, while the 40 × 5 condition saw the smallest increase. (c) Alternation rate judged most likely to be produced by a fair coin in each condition. In all panels the horizontal dashed line shows the theoretical value for a fair coin. Error bars represent ±1 SE.