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New treatment option for Chronotype
Official title Chronotype Alignment and Time Perception
ClinicalTrials.gov ID: NCT07677111
What this study is testing
- What it's testing
- People differ in chronotype - whether they function best in the morning ("larks") or the evening ("owls"). This study asks whether the match or mismatch between a person's chronotype and the time of day at which they are tested changes how they perceive time.
A plain-language read of the study's public ClinicalTrials.gov listing. The study team confirms the details.
Who can take part
Ages 18 to 55. Healthy volunteers may be eligible.
You may be able to join if
- Healthy adult, 18-40 years
- Clear morning-type or evening-type on the Morningness-Eveningness Questionnaire (MEQ-SA); intermediate types excluded (state exact cut-offs, e.g...
- Normal or corrected-to-normal visual acuity
- Normal colour vision (e.g. Ishihara screening)
- Fluent in the testing-site language (Danish, Chinese, or English)
You likely can't join if
- Intermediate chronotype (MEQ in the middle band)
- Night or rotating shift work in the past 3 months, or recent trans-meridian travel (more than 2 time zones in the past 4 weeks)
- Diagnosed sleep disorder (e.g. insomnia, sleep apnoea)
- Current psychiatric or neurological disorder
- Use of sleep medication or psychoactive or CNS-active drugs
- Colour-vision deficiency
See the full eligibility criteria
- Healthy adult, 18-40 years
- Clear morning-type or evening-type on the Morningness-Eveningness Questionnaire (MEQ-SA); intermediate types excluded (state exact cut-offs, e.g. evening-type 41 or below, morning-type 59 or above)
- Normal or corrected-to-normal visual acuity
- Normal colour vision (e.g. Ishihara screening)
- Fluent in the testing-site language (Danish, Chinese, or English)
- Able to attend both an early-morning (about 08:00) and a late-evening (about 22:00) session
- Intermediate chronotype (MEQ in the middle band)
- Night or rotating shift work in the past 3 months, or recent trans-meridian travel (more than 2 time zones in the past 4 weeks)
- Diagnosed sleep disorder (e.g. insomnia, sleep apnoea)
- Current psychiatric or neurological disorder
- Use of sleep medication or psychoactive or CNS-active drugs
- Colour-vision deficiency
- Substance-use disorder
The study team makes the final eligibility decision.
Where it's taking place
- Hong Kong, Hong Kong
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling all sexes, 18 years to 55 years. Healthy volunteers may be eligible. The study team makes the final eligibility decision.
Where is this trial taking place?
Study sites include Hong Kong, Hong Kong. Enter your location above to see the nearest site and check your eligibility.
Explore other conditions
BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from ClinicalTrials.gov; the study team decides eligibility.