TABLE 3.

Experiment 2 actigraphy.

	TYPICAL (N = 16)
	Week 1 (7 nights)	Experimental weekend (2 nights)	Sunday (1 night)	Week 2 (4 nights)
Sleep Start Time*
Mean	22:59 h	00:37 h	00:41 h	23:03 h
SD	25 min	29 min	37 min	22 min
Minimum	22:28 h	23:56 h	23:57 h	22:42 h
Maximum	23:55 h	01:50 h	02:32 h	23:49 h
Sleep End Time*
Mean	06:18 h	09:11 h	06:23 h	06:18 h
SD	25 min	37 min	27 min	26 min
Minimum	05:48 h	07:52 h	05:30 h	05:25 h
Maximum	07:09 h	10:33 h	07:04 h	07:07 h
Sleep Minutes
Mean	420	489	330	415
SD	14	25	30	22
Minimum	391	438	268	350
Maximum	445	522	381	444

	LIGHT (N = 17)
	Week 1 (7 nights)	Experimental weekend (2 nights)	Sunday (1 night)	Week 2 (4 nights)
Sleep Start Time*
Mean	23:04 h	00:36 h	00:39 h	23:06 h
SD	25 min	24 min	28 min	31 min
Minimum	22:33 h	23:58 h	00:00 h	22:20 h
Maximum	00:01 h	01:26 h	01:40 h	00:24 h
Sleep End Time*
Mean	06:25 h	09:09 h	06:25 h	06:24 h
SD	26 min	29 min	23 min	25 min
Minimum	05:53 h	08:25 h	05:50 h	05:46 h
Maximum	07:14 h	10:10 h	07:08 h	07:18 h
Sleep Minutes
Mean	417	483	334	417
SD	24	35	15	25
Minimum	345	390	305	360
Maximum	457	526	357	446

^*Times given in 24-h clock time. SDs given in minutes and computed across participants.