Much can be revealed regarding the cognitive control of interactive behavior by understanding the way in which multiple tasks are interleaved. Across three studies we held one task constant and varied the nature of the secondary task. The main task was the Argus Prime (Schoelles & Gray, 2001) simulated task environment (Gray, 2002). Argus is a complex task designed to mimic aspects of a radar operator’s job. The basic paradigm entails keeping track of 20 moving targets on a radar-screen interface, calculating the threat value of each, and classifying the target by its threat value. In a 12-min scenario, 70-85 accurate calculations and classifications are required for perfect performance.
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