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During skill execution, performers have been shown to attend to different aspects of movement, the external effects of one's action, or to other environmental information. A variety of psychological mechanisms have been proposed to account for the differential outcomes when adopting each attentional strategy. However, there is limited information about the extent to which different attentional foci change the workload demands of task performance. To examine this, the current study administered the NASA-Task Load Index following a simulated shooting dual-task. Participants performed the primary shooting task alone (control), and also with a secondary task that directed attention towards an aspect of skill execution (skill-focused) and an unrelated environmental stimulus (extraneous focus). Primary and secondary task performances were significantly greater in the extraneous focus compared to the skill-focused …