Table 3.

Mixed model, analysis of cognitive measures for each chronotype group

Outcome		ChronotypeMSFsc (n=7 earlier, n=7 later)		ChronotypeDLMO (n=7 earlier, n=7 later)
		F value	p value	F value	p value
Cognitive Throughput	Time	5.34	0.0001	6.54	0.0000
	Chronotype	1.59	0.2311	0.06	0.8123
	T × C	0.46	0.8338	1.60	0.1603
Cognitive Throughput for Target Present Trials	Time	0.27	0.9472	0.56	0.7621
	Chronotype	0.00	0.9632	0.23	0.6433
	T × C	0.73	0.6288	0.71	0.6436
Cognitive Throughput for Target Absent Trials	Time	2.81	0.0214	4.75	0.0004
	Chronotype	1.35	0.2674	0.08	0.7830
	T × C	1.83	0.1076	1.04	0.4082
Overall MedRTC	Time	3.01	0.0128	5.21	0.0002
	Chronotype	1.46	0.2501	0.05	0.8258
	T × C	2.32	0.0431	1.49	0.1943
MedRTC on Target Present Trials	Time	1.27	0.2828	1.17	0.3309
	Chronotype	0.22	0.6503	0.01	0.9298
	T × C	0.15	0.9875	1.19	0.3205
MedRTC on Target Absent Trials	Time	3.04	0.0117	4.92	0.0003
	Chronotype	1.34	0.2697	0.04	0.8449
	T × C	1.91	0.0917	1.06	0.3925
% Missed Targets	Time	0.90	0.5034	0.72	0.6351
	Chronotype	2.56	0.1361	0.00	0.9460
	T × C	0.96	0.4616	0.49	0.8126
Slope for Correct Responses on Target Present Trials	Time	1.75	0.1222	1.64	0.1496
	Chronotype	1.23	0.2891	3.42	0.0898
	T × C	0.46	0.8365	0.34	0.9146
Slope for Correct Responses on Target Absent Trials	Time	2.35	0.0409	5.01	0.0003
	Chronotype	1.01	0.3355	0.03	0.8595
	T × C	1.67	0.1427	0.73	0.6282

MedRTC, Median reaction time for correct responses; T × C, interaction for time by chronotype; ChronotypeMSFsc, chronotype derived using the mid sleep phase corrected from the Munich chronotype questionnaire; ChronotypeDLMO, chronotype derived using the timing of the dim light melatonin onset.