Table 2.

Exploratory factor analysis item loadings.

Item #	Item description	Factor loading
1	How often do you think you need more sleep?	0.727
2	Drowsy/asleep during homework	0.704
3	Trouble getting out of bed in the morning	0.702
4	Fall asleep/drowsy during class	0.690
5	Tired and grumpy during the day	0.662
6	Need someone to awaken you	0.624
7	Fall back to sleep after being awakened	0.609
8	Usually alert during the day (reverse coded)	0.438