Abstract
Two experiments tested near-threshold recognition performance throughout the visual field, examined the effect of the recognition task on a concurrent attitude tracking task, and tested whether individuals' near-threshold performance would predict their dual-task performance. In Experiment 1, an adaptive procedure measured the minimum viewing duration necessary for 75% performance in an aircraft classification task at various nonfoveal locations. Participants' critical tracking ability was also assessed using a central attitude display. Recognition deteriorated with eccentricity, and a wide distribution of recognition and tracking abilities was found. Experiment 2 combined the tasks; recognition was designated the primary task. Dual-task measures included the change in recognition accuracy and the increase in tracking error. Individuals' recognition thresholds (Experiment I) failed to predict their dual-task tracking performance (Experiment 2). Notably, viewers' critical tracking ability predicted their s...
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