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. 2017 Jun 14;9(4):751–770. doi: 10.1007/s13164-017-0346-3

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© The Author(s) 2017

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 — Examples of the knots used in this study, completed by the experimenter (CC) using the materials provided to participants. Upper panels display the less challenging knot types (a Carrick Bend, and b Improved Clinch), and lower panels the more complex examples (c Purcell Prusik Loop, and d Trucker’s Hitch)