This study examined whether there would be students who differ in frequency of media multitasking between preferred and non-preferred classes, and if any of these students differed in levels of trait impulsiveness and delay discounting. Students were compared on their freuqencies of media multitasking in preferred and non-preferred classes, delay discounting tasks, and trait impulsivity measures. Results suggests devaluation of future rewards is an underlying mechanism for resisting media multitasking in the classroom.