Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 50 5 2012 05 15 311 314 EN Majid Nejati Department of Anatomical Sciences Research Center, Kashan Univercity of Medical Sciences, Kashan, Iran. Vahid Nejati Department of Cognitive Science, Shahid Beheshti University, Tehran, Iran. 2015 09 28 Chess is considered as a cognitive game because of severe engagement of the mental resources during playing. The purpose of this study is evaluation of frontal lobe function of chess players with matched non-players. Wisconsin Card Sorting Test (WCST) data showed no difference between the player and non-player groups in preservation error and completed categories but surprisingly showed significantly lower grade of the player group in correct response. Our data reveal that chess players don't have any preference in any stage of Stroop test. Chess players don't have any preference in selective attention, inhibition and executive cognitive function. Chess players' have lower shifting abilities than non-players. https://acta.tums.ac.ir/index.php/acta/article/view/3903 https://acta.tums.ac.ir/index.php/acta/article/download/3903/3878