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. 2016 Jul 8;6:29392. doi: 10.1038/srep29392

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Chronotype by time of day interaction from matrix task results (±SE) for MEQ-based (a) and RNA-based chronotypes (b). Y-axis represents the number of matrices incorrectly reported with solutions. There were no significant main effects of chronotype or time of day or interactions for MEQ-chronotypes. For RNA-based chronotypes, there are no significant main effects for chronotype or time of day, but there is a significant interaction effect (F(1,20) = 5.24, p = 0.04, η² = 0.21; n = 16 larks, 8 owls).