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Dissociable Processes in Classification: Implications From Sleep Deprivation

Military personnel often continue at high levels of performance despite being deprived of sleep. This article examines sleep deprivation effects on two forms of classification learning. In AN classification, participants are trained on one category and are then required to classify new items into the A or a previously unseen non-A category. In AB classification, participants are trained on A and B category members and are then required to classify new items into the A or B category. Preliminary results suggest that sleep deprivation impairs AN classification learning but leaves intact AB classification learning. Implications for military training are discussed.