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Weekend Bedtime and Weekend Wake Time by Grade
Note. Shaded grey diamonds (◆) show the increasingly later bedtime that occurs with advancing grade, while the black squares (■) show the increasing later wake time with advancing grade. Significant difference in weekend bedtime, F(1,392)=16.74, p<.001, ηp2 = .20, and weekend wake time, F(1,392)=8.28, p<.001, ηp2 =.11.
