Wisconsin Card Sorting Test
![Screenshot from the PEBL computerized version of the Wisconsin Card sort](/Images/godic/202502/21/WisconsinCardSort4823.png")
![This image shows the four lobes of the human brain: the frontal lobe (red), the parietal lobe (orange), the temporal lobe (green), and the occipital lobe (yellow). Also shown are the insular cortex (purple), the brain stem (black), and the cerebellum (blue).](/Images/godic/202502/21/Four_lobes_animation_small24823.gif")
![This image shows a midsagittal cross-section of a human brain. The portion in color is the left frontal lobe, destroyed in Phineas Gage's accident.](/Images/godic/202502/21/Frontal_lobe_animation4823.gif")
The Wisconsin Card Sorting Test (WCST) is a neuropsychological test of "set-shifting", i.e. the ability to display flexibility in the face of changing schedules of reinforcement. The WCST was written by David A. Grant and Esta A. Berg. The Professional Manual for the WCST was written by Robert K. Heaton, Gordon J. Chelune, Jack L. Talley, Gary G. Kay, and Glenn Curtiss.