NCT05808179 · Stanford University
Shifting Sleep Timing in Teens
What this study is about
The goal of this clinical trial is to determine whether a combination of a novel lighting intervention and a behavioral intervention are able to increase total sleep time in adolescents.
View original scientific description
The goal of this clinical trial is to determine whether a combination of a novel lighting intervention and a behavioral intervention are able to increase total sleep time in adolescents. The main questions this trial aims to answer are whether this combination therapy is able to meaningfully increase total sleep time in adolescents, and do so over a sustained period of time, and whether such a changes is associated with concomitant changes in mood and cognitive performance.
Interventions
DEVICE
Light
Broad-spectrum white light flashes are \~4000 lux, 2 msec long, occur every 20 s
BEHAVIORAL
CBT
Cognitive behavioral therapy including psychoeducation, sleep hygiene, stimulus control, activity scheduling, motivational interviewing
DEVICE
Sham Light
Broad-spectrum white light flashes are \~4000 lux, 2 msec long, occur once
Primary outcome measures
Total sleep time
Time frame: 20 weeks
Average nightly total sleep time
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Aged 14-18 and a full-time student in grades 9-12
- Male or female
- Willing and with a schedule permitting them to go to bed at an earlier time
- Planning on sleeping at home in their bedroom for at least 75% of the study
Exclusion criteria
- Currently taking any medications (including over-the-counter medications, e.g., melatonin) specifically for the treatment of sleep disorders
- Sleep only in the prone (face-down) position
Where
- Stanford, California
Collaborators
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jun 24, 2025 · Source of record for eligibility and locations