Don't interrupt me! Task interruption depletes the self's limited resources

It is a common occurrence in daily life to be interrupted prior to completing a task. Such interruptions may have deleterious effects for limited self-resources, especially if they occur just prior to task completion. This hypothesis was tested in three experiments. In the first two, participants initially engaged in a card sorting task, and then subsequently performed a self-control task. In Experiment 3, participants first engaged in a word search task and then worked on an executive function task. In all instances, participants who were interrupted just prior to attaining their goal of completing the initial task, but not those who were stopped earlier in the task or who were allowed to finish, showed evidence of impairment on the subsequent measures. The findings suggest that the desire to pursue a goal increases as goal attainment draws nearer, and that the amount of self-control needed to stop working on a task is modified by situational variables such as goal distance.