From skimming the study where they changed the wording[1], it seems like they did in fact use cards, just like the original study. [1] http://cogpsy.info/wp-co

From skimming the study where they changed the wording[1], it seems like they did in fact use cards, just like the original study. [1] http://cogpsy.info/wp-content/uploads/2013/08/Griggs_Cox_1982_The-elusive-thematic-materials-effect-in-Wasons-selection-task.pdf http://cogpsy.info/wp-content/uploads/2013/08/Griggs_Cox_198...