# Winsconsin Card Sorting Test (WCST) ## Online WCST The online WCST is the task as implemented during the ESCoP 2019 workshop. The `basic` version corresponds to the limited WCST as created during the basic steps. The `complete` version corresponds to the complete WCST as created during the extra assignments. - <https://osdoc.cogsci.nl/3.2/escop2019> ## Desktop WCST This is an implementation of the MWCST for [OpenSesame 3.2](http://osdoc.cogsci.nl/). The test is based on: - Nelson, H. E. (1976). A modified card sorting test sensitive to frontal lobe defects. *Cortex*, *12*(4), 313–324. https://doi.org/10.1016/S0010-9452(76)80035-4 ### Procedure Four *stimulus cards* are shown at the top of the screen. One *response card* is shown at the bottom. Each cards have three features: - color: red, blue, green, or orange - shape: star, triangle, cross, or circle - number: 1, 2, 3, or 4 Each stimulus card is unique in a combination of color, shape, and number. The response card matches three of the stimulus cards on exactly one feature, and does not match one of the stimulus cards at all. The participant sorts the response card by clicking on one of the stimulus cards. The sorting rule is the dimension on which the stimulus and response cards should match (e.g. sort based on color). The participant is not told the sorting rule. On the first trial, the sorting is based on how the participant sorts. That is, the participant is always correct, unless he or she clicks on a fully non-matching stimulus card. This sorting rule is then kept until the participant has responded correctly a certain number of times in a row. The sorting rule is then reset, again based on how the participant sorts, except that the sorting rule has to be different from before. ## Settings In the experiment, the `settings` item contains several configurable options.