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Teens who stay up late: new therapy aims to reset body clocks
NCT ID NCT01828320
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study tested whether behavioral therapies could help teens who naturally go to bed late shift to earlier bedtimes. 176 teens with late sleep patterns were given either a combination of therapies (cognitive behavioral therapy, social rhythms therapy, and light therapy) or basic education about sleep. The goal was to see if earlier bedtimes could reduce risks in emotional, behavioral, social, physical, and school-related areas. The study is already completed, and results focus on changes in sleep timing and overall functioning.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Cognitive Behavior Therapy for Insomnia, Interpersonal and Social Rhythms Therapy, Chronotherapy, and Psychoeducation
- What this could lead to
- If successful, these therapies could offer a practical way to help teens shift to earlier bedtimes, potentially improving mood, school focus, and overall health.
- What could go wrong
- This is a small, completed study with no long-term follow-up, so lasting benefits are uncertain. Results may not apply to all teens, and behavioral changes can be hard to maintain.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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176 people
The number who actually took part.
- Start date
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Mar 2013
- Finished
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Dec 2018
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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10 to 18 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion criteria. 1. Scoring within the lowest quartile of the Children's Morningness-Eveningness Preferences Scale (CMEP; 27 or lower) and a 7-day sleep diary showing a sleep onset time of of 10:40 pm or later for 10-13 year olds, 11 pm or later for 14-16 year olds, and 11:20 pm or later for 17-18 year olds at least 3 nights per week. Must have had the current pattern of late bedtimes for the last 3 months. 2. 'At risk' in one of the five health domains: emotional, behavioral, social, physical, and cognitive. Emotional risk will be operationalized as a score of 4 or above on any of the following items on the Child Depression Rating Scale: Difficulty Having Fun, Social Withdrawal, Irritability, Depressed Feelings, Excessive Weeping, or a T-score of 61 or above on the Multidimensional Anxiety Scale for Children (MASC), based on age group (10-11 years, 12-15 year, 16-19 years) using the MASC-10 Profile. Behavioral risk will be operationalized as a Sensation Seeking Scale score greater than 3.93 for males ages 10-13, greater than 3.19 for females 10-13, greater than 4.07 for males 14-18, or greater than 3.19 for females 14-18; taking Attention-deficit/hyperactivity disorder (ADHD) medication or Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children (KSADs) diagnosis of ADHD; current alcohol or substance abuse; or past alcohol or substance dependence. Social and cognitive risk will be defined as "worse" than others the teen's age in one or more social behavior from Child Behavior Checklist (CBCL) Section VI or failing one or more academic class from CBCL Section VII, respectively. Physical risk will be operationalized as a Physical Health Questionnaire-15 score of 4 or above, six or more days of school absences, or a BMI above the 85th percentile for the participant's sex and age. 3. Age between 10 and 18 and living with a parent or guardian and and attending a class/job by 9am at least 3 days per week; 4. English language fluency; 5. Able and willing to give informed assent. Exclusion criteria. 1. An active, progressive physical illness (e.g., cancer, respiratory disorder) or neurological degenerative disease directly related to the onset and course of the sleep disturbance; 2. Evidence from clinical diagnosis or report by youth or parent of sleep apnea, restless legs or periodic limb movements during sleep. Youth presenting with provisional diagnoses of any of these disorders (e.g., sleep apnea) will be referred for a non-study polysomnography (PSG) evaluation at the parent's discretion and will be enrolled only if the diagnosis is disconfirmed; 3. Mental retardation, autism spectrum disorder, or other significantly impairing pervasive developmental disorder. Based on previous recruitment experiences in our youth depression study, we expect this exclusion to be invoked very infrequently (once every few years); 4. Bipolar disorder or schizophrenia or another current Axis I disorder if there is a significant risk of harm and/or decompensation if treatment of that comorbid condition is delayed as a function of participating in any stage of this study. Otherwise, we will allow all other comorbid psychiatric conditions to (i) to maximize representativeness and (ii) because a byproduct may be that the treatment constitutes a helpful 'transdiagnostic' treatment for youth across psychiatric disorders. 5. A medication-free group may be difficult to recruit and would likely be unrepresentative. Hence, participants will not be excluded on the basis of stable use of medications (\> 4 weeks). The exception was use of hypnotics and other medications known to alter sleep (e.g., melatonin). 6. History of substance dependence in the past six months; 7. Current suicide risk sufficient to preclude treatment on an outpatient basis.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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University of California, Berkeley
Berkeley, California, 94720, United States