Healthy women (18-40 years old) currently pregnant with their first child are needed for a research study at Stanford University to understand the development of a baby’s sleep-wake schedule. Participation involves you and your baby wearing a special wristwatch used to track sleep for 6 weeks at home after birth. You will also complete daily sleep and feedings diaries during this time. Compensation is up to $350. For more information please contact us at: momsleepstudy@stanford.edu. For participant’s rights questions, contact 1-866-680-2906.