Impact of Short and Mistimed Sleep on Adolescents With ADHD: The Adolescent Attention and Circadian Timing Study
AACT
Impact of Circadian Misalignment for Adolescents With ADHD: Observational and Mechanistic Data
1 other identifier
interventional
50
1 country
1
Brief Summary
Many adolescents go to bed late and wake up early for school. Science is only beginning to understand how sleep schedules can affect them. The investigators are interested in whether changing adolescents' sleep patterns affects their functioning, attention, and how they feel. The investigators are especially interested in the effects of changing both how much sleep adolescents get and when that sleep happens. This study focuses on healthy 13-17-year-olds with ADHD. This study asks adolescents to systematically change their sleeping habits across a 3 week span. The first week, they follow a sleep schedule that fits reasonably well with the schedule they keep when they do not have to wake up early for any specific obligation (e.g., for school). The second week, they spend several nights in a "short sleep" condition, during which they get 6.5 hours in bed per night. The final week, they enter a sleep condition that allows for healthy sleep duration, but with a timing that is randomly assigned to either fit well with their preferred schedule or fit poorly with that schedule. During each week, they and their parents complete measures of their attention and other factors. At the end of each week, they attend an evening session to measure their internal body clock ("circadian phase"), as well as measures of attention and other thinking skills. The goal is to understand whether the benefits of healthy sleep duration depend on the timing of when that sleep occurs.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Jul 2026
Longer than P75 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
June 10, 2026
CompletedStudy Start
First participant enrolled
July 1, 2026
CompletedFirst Posted
Study publicly available on registry
July 6, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 1, 2030
ExpectedStudy Completion
Last participant's last visit for all outcomes
August 1, 2030
July 6, 2026
June 1, 2026
4.1 years
June 10, 2026
June 29, 2026
Conditions
Outcome Measures
Primary Outcomes (1)
Caregiver- and Adolescent-Reported Symptoms of Inattention
Daily diary listing symptoms of inattention adapted from the IOWA Conners Questionnaire. Adolescents will self-report their own symptoms for the previous day. Parents/caregivers will report on their observations of the adolescents' symptoms for the previous day. Higher scores indicate greater inattention.
Daily throughout each participant's involvement in the study, up to 3 weeks
Secondary Outcomes (6)
Caregiver- and Adolescent-Reported Internalizing Symptoms (depression, anxiety)
Each office visit during the participant's involvement. Office visits are spaced 1 week apart, for up to three visits.
Caregiver- and Adolescent-Reported Emotional Dysregulation
Each office visit during the participant's involvement. Office visits are spaced 1 week apart, for up to three visits.
Caregiver- and Adolescent-Reported Impulsivity
Each office visit during the participant's involvement. Office visits are spaced 1 week apart, for up to three visits.
Sleep Period Duration
Nightly throughout study participation (around 3 weeks)
Inattention
Twice daily during weeks 2 and 3 of study participation.
- +1 more secondary outcomes
Study Arms (2)
Aligned Sleep Extension
EXPERIMENTALOne of two variants on the timing of period of when there is an opportunity to get healthy/recommended sleep duration. Aligned sleep extension allows 9.5 hours/night in bed in a manner that broadly fits with an adolescent's chronotype (e.g., early-to-bed and early-to-rise schedule for a morning lark).
Misaligned Sleep Extension
EXPERIMENTALOne of two variants on the timing of period of when there is an opportunity to get healthy/recommended sleep duration. Aligned sleep extension allows 9.5 hours/night in bed in a manner that is broadly a poor fit with an adolescent's chronotype (e.g., early-to-bed and early-to-rise schedule for a night owl).
Interventions
Timing of extended sleep condition is randomly assigned to fit with participant's chronotype
Timing of extended sleep condition is randomly assigned to fit poorly with participant's chronotype
Eligibility Criteria
You may qualify if:
- Ages 13-17 years at time of informed consent/assent
- Based on semi-structured clinical interview, participants must meet full DSM-5 criteria for ADHD inattentive or ADHD combined presentation.
You may not qualify if:
- Non-traditional school setting (morning-afternoon Monday-Friday).
- High caffeine intake. To promote adherence to directives not to consume caffeine the day of office visits without withdrawal effects, adolescents with daily intake of \>1 coffee or "energy drink" or \>2 caffeinated sodas per day based on caregiver- and adolescent-report will be excluded.
- Unwillingness or inability to take part in study procedures (e.g., visits, prescribed sleep conditions).
- Medication use or unwillingness to discontinue melatonin and/or stimulant medications during the 3-week study protocol.
- Refusal to refrain from automobile driving during the sleep restriction condition.
- "Intermediate" Chronotypes (neither morning larks nor night owls) based on habitual sleep timing on nights when adolescent has no morning obligations such as school or work.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Cincinnati Children's Hospital Medical Center
Cincinnati, Ohio, 45229, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Dean Beebe, Ph.D.
Children's Hospital Medical Center, Cincinnati
- PRINCIPAL INVESTIGATOR
Stephen Becker, Ph.D.
Children's Hospital Medical Center, Cincinnati
Central Study Contacts
Stephen Becker, Ph.D.
CONTACT
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- BASIC SCIENCE
- Intervention Model
- FACTORIAL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
June 10, 2026
First Posted
July 6, 2026
Study Start
July 1, 2026
Primary Completion (Estimated)
August 1, 2030
Study Completion (Estimated)
August 1, 2030
Last Updated
July 6, 2026
Record last verified: 2026-06
Data Sharing
- IPD Sharing
- Will share
- Time Frame
- Per NDA guidelines, data will be uploaded every 6 months throughout the study. Longevity of those data will be determined by the NIMH.
- Access Criteria
- To access study data within NDA, users must submit at Data Request Checklist to NDA, sign the NIMH NDA Data Use Agreement, and submit proof of IRB approval. The Data Request Checklist will specify that data must be used for research purposes only, data will not be shared or sold, attempts will not be made to identify individual participants, etc. The NDA Data Access Committee will decide which requests to grant based on the information submitted. If given access, data access will be granted for one year but this is renewable. Should individuals or organizations request the dataset directly from the investigators, those requests will be directed to the NDA to retrieve the data.
Per sponsor policy, primary outcome data will be shared with the NIMH Data Archive (NDA).