NCT06971640 · Duke University
Advancing Identification of Circadian Delay in ADHD Youth: Associations With Clinical Heterogeneity and Cognition
(CIRCA)
What this study is about
The purpose of this study is to better understand sleep and circadian functioning in children with ADHD using home-based measures, parent report, and a lab based melatonin assessment. Investigators will also examine how sleep relates to psychiatric health and cognition among children with ADHD. The investigator for this study is Dr. Jessica Lunsford-Avery from the Department of Psychiatry.
View original scientific description
The purpose of this study is to better understand sleep and circadian functioning in children with ADHD using home-based measures, parent report, and a lab based melatonin assessment. Investigators will also examine how sleep relates to psychiatric health and cognition among children with ADHD. The investigator for this study is Dr. Jessica Lunsford-Avery from the Department of Psychiatry.
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
- Child ages 6-9
- Meet criteria for a primary psychiatric diagnosis of DSM-5 ADHD, any presentation
- Intellectual functioning \>80
- Healthy (i.e., no major medical problems)
- If applicable, willingness to suspend use of melatonin during the study period
Exclusion criteria
- Meet DSM-5 criteria for psychosis, bipolar, or autism spectrum disorders
- Diagnosis of occult sleep disorders, including sleep apnea or restless leg syndrome
- Medication for sleep other than melatonin
- Plans to initiate stimulant medication during the study period
Where
- Durham, North Carolina
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 May 5, 2026 · Source of record for eligibility and locations