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. 2013 Apr 17;7:53. doi: 10.3389/fnins.2013.00053

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Copyright © 2013 Mata, Wilke and Czienskowski.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.

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Screenshot of the Word Puzzle task (Czienskowski, 2005b). German singular noun word solutions to a letter sequence (here, LGIRNAHEM) are typed into the entry field (here, ANGEL). Subjects receive feedback on if their solution is correct (green circle lights up) or incorrect (red circle lights up). All valid solutions that have been generated so far appear on the word stack (right side). Subjects can choose to move to the next letter sequence at any time by hitting the red switch sequence button (lower right). Hitting the switching button will initiate a waiting period in which a bouncing ball animation is shown (i.e., the travel time between subsequent letter sequences) followed by the appearance of a fresh letter sequence (with the entry field cleared and the word stack emptied).