We are looking for males and females, ages 16-30 to participate in a study at the Sleep and Chronobiology Lab at the University of Colorado Boulder. The purpose of the study is to understand mechanisms of delayed sleep-wake phase disorder (DSWPD). The study is 6.5 weeks long with six in-person visits. 

You may be eligible for this study if you are: 

• Age 16-30
• Are healthy with typical bedtimes and no sleep concerns
• Have with a diagnosis of delayed-sleep wake phase disorder, OR have late bedtimes after 1 a.m., an inability to fall asleep and difficulty awakening when required for school/work

Study activities include:

• Health screening
• Monitor on separate occasions your sleep, mood, eating times for 1 or 2 weeks and blood sugar levels while living at home
• Live in the sleep laboratory on two separate occasions for 48-66 hours (~4.87 days in total)
• Blood and saliva sampling
• Reaction time, mood, and ability to think testing

Compensation is up to $1,750.