NCT00271622 · National Institute of Mental Health (NIMH)
The Neurodevelopmental and Behavioral Phenotyping Screening Protocol
What this study is about
The purpose of this protocol is to allow for the careful evaluation of healthy volunteers and individuals with risk for psychiatric disorders or neurodevelopmental disorders, such as autism spectrum disorder for specific protocols at NIH.
View original scientific description
The purpose of this protocol is to allow for the careful evaluation of healthy volunteers and individuals with risk for psychiatric disorders or neurodevelopmental disorders, such as autism spectrum disorder for specific protocols at NIH.
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
- Subjects must be at least 6 weeks of age.
- Subjects or their parents must be competent to comprehend the purpose of the screening process and to provide written informed consent. Parents/guardians will sign the consent form, and both minors and adults (depending on results of capacity assessment) will be asked to assent only if it is determined that they understand their role in the study.
- Subjects must be willing to undergo an evaluation which may include a psychiatric interview; and medical, neurological, and laboratory examinations (as appropriate, such as renal and liver function tests, serum electrolytes, urinalysis, blood levels of psychotropic drugs, and urine drug screen for the presence of psychoactive drugs and drugs of abuse, as determined on a subject-to-subject basis).
Exclusion criteria
- -Lack of appropriate consent: For minor patients, consent must be obtained from all legal guardians/caretakers, including both parents in separated or divorced families where there is shared legal custody of the child. In such cases, both parents must consent to the child s participation in this protocol.
Where
- Bethesda, Maryland
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 25, 2026 · Source of record for eligibility and locations