The present research aimed to identify the effect of attentional control as a median variable between negative thinking and tablet-based test anxiety among first grade students in general secondary stage. To achieve this goal, the researchers chose randomly a sample that consisted of (369) male (n= 172) and female (n= 197) first grade students in general secondary stage in Sharkia Governorate. The researchers used three research measures (attentional control - negative thinking – tablet-based anxiety) to collect data. By using multiple regression and path analysis the researchers reached the following results: there is no statistically significant effect of negative thinking and its dimensions on attention control, otherwise, there is a statistically significant direct effect of uncontrollability dimension at (0.01 level) and mind capture dimension (at 0.05 level), whereas there is no statistically significant direct effect of (repetitiveness and unproductiveness) as dimensions of negative thinking on tablet-based test anxiety, and there is no statistically significant direct effect of attention control and its dimensions on tablet-based test anxiety, finally there is a statistically significant indirect effect of negative thinking on tablet-based test anxiety in case of the presence attention control as a median variable among first grade students in general secondary stage.