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Working Memory (WM) performance across the three experimental groups. 1) WM accuracy was significantly improved from Session 1 (Black bar) to Session 2 (Hatched bar) in a paired sample t-test in the Nap and QW group. 2) WM Reaction Time (RT) was significantly improved from Session 1 to Session 2 only in QW group. (* represent p-values < 0.05).
