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With the increasing popularity of high-potency THC products, it is important that we both understand the implications of chronic use and how to help those who want to reduce their cannabis use. 

The aim of this study is to investigate whether CBD could be a viable intervention for people who want to quit or significantly reduce their consumption of high-potency THC concentrates. Longitudinal Outpatient Treatment for Cannabis Use (LOTUS) through the CUChange lab will examine any differences in efficacy between broad-spectrum CBD and full-spectrum CBD in reducing withdrawal symptoms when compared to a placebo. LOTUS study participation takes place over four months. However, your total time commitment will be 13 hours. Participants have seven in-person appointments and five therapy sessions focused on cannabis reduction.

In order to be eligible, participants must be at least 21 years old. Eligible participants can complete the

Participants will be compensated and the end of every in-person appointment and can receive up to $390 dollars for their time and efforts.

Researchers at Â鶹Ãâ·Ñ°æÏÂÔØBoulder are conducting an in-person research study examining how adults with chronic pain read and understand informational texts.

If you choose to participate, you will complete a reading and comprehension task while your eye movements are recorded using an eye-tracking system on a computer screen. You will also complete questionnaires about your background, health and everyday experiences.

The study involves one in-person visit at Â鶹Ãâ·Ñ°æÏÂÔØBoulder and will take approximately 90 minutes. Participants who complete all study procedures will receive $30 per hour in compensation.

Eye tracking is a non-invasive method that uses a camera-based system to measure where you look on a computer screen while completing the reading task.

Participation is voluntary. You may stop participating at any time.

To be eligible, you must be at least 18 years old, be able to come to Â鶹Ãâ·Ñ°æÏÂÔØBoulder for an in-person study visit and have chronic pain.

If interested, please fill out the

The Integrative Physiology of Aging Lab at Â鶹Ãâ·Ñ°æÏÂÔØBoulder is seeking volunteers to participate in a clinical research study. They are looking for adults, ages 40-plus, who are willing to participate in water-immersion sessions approximately three times per week for 12 weeks and have above-normal blood pressure (a top number of 115 or higher; if you are unsure of your blood pressure, please still contact the lab for screening). 

Benefits for volunteers include: cardiovascular health assessment, exercise stress test, body composition, blood chemistries and monetary compensation for time. 

For more information, please email ipalab@colorado.edu or call 303-735-6410.

Paid Young Emerging Adult Research Study (YEARS) study at Â鶹Ãâ·Ñ°æÏÂÔØBoulder and Â鶹Ãâ·Ñ°æÏÂÔØAnschutz (IRB# 232067) to understand emotions. Earn $25 per hour (up to approximately $400 total) for up to three study session phases (1.75 hours). Must be 18–25 years, be able to attend in-person sessions, and have a personal history of bipolar disorder.

Join the Paid Young Emerging Adult Research Study (YEARS) study at Â鶹Ãâ·Ñ°æÏÂÔØBoulder and Â鶹Ãâ·Ñ°æÏÂÔØAnschutz (IRB# 23-2067) to understand emotions. 

Earn $25 per hour (up to approximately $400 total) for up to three study session phases (1.75 hours). Must be 18–25 years, be able to attend in-person sessions and have no mental health history. 

Email years-study@colorado.edu or call 303-735-7547

The purpose of this study is to examine circadian rhythms in the home environment under three different lighting conditions: typical home lighting, candlelight and outdoor sunlight in the morning. The findings will provide important insights into how circadian rhythms can be measured outside of the laboratory and how morning light exposure influences circadian hormones. 

Â鶹Ãâ·Ñ°æÏÂÔØBoulder researchers are looking for men and women, ages 18–65, to participate in an at-home monitoring research study that lasts approximately one week, with a total of two short visits at the Sleep and Chronobiology Laboratory. Compensation is up to $180. 

If you have any other questions, please email sleep.study@colorado.edu and ask about the Morning Light Study.

Do you have trouble falling asleep before 1 a.m.? Do you find it difficult to wake up early in the morning for your commitments? Does your high schooler have a hard time falling asleep before 1 a.m. and waking up early in the morning/for high school? 

The Sleep and Chronobiology Laboratory is looking for people with delayed sleep-wake phase disorder or people with late bedtimes—or healthy people with typical bedtimes. 

Eligibility

Researchers are looking for males and females, ages 16–40, to participate in a 6.5-weeklong study with six in-person visits. You may be eligible for this study if you:

• Have a diagnosis of delayed-sleep wake phase disorder or have late bedtimes after 1 a.m., an inability to fall asleep and difficulty awakening when required for school/work
• Or are healthy with typical bedtimes and no sleep concerns 

What should you expect during the study? 

• Health screening
• Monitor on separate occasions your sleep, mood, eating times for one or two weeks and blood sugar levels while living at home
• Live in the sleep laboratory on two separate occasions for 51–66 hours (approximately 4.87 days in total) 
• Blood and saliva sampling 
• A few blood samples and more frequent saliva sampling 
• Testing on reaction time, mood and ability to think 

Compensation is up to $2,009. If you have any other questions, please email sleep.study@colorado.edu and ask about the Circadian Rhythms and DSWPD study, or call 303-735-1923.

Do you love listening to music? Are you curious about how your favorite music affects your brain? The Brain Music Lab at Â鶹Ãâ·Ñ°æÏÂÔØBoulder is currently recruiting participants for a research study, Neural Mechanisms of Music Appreciation (Â鶹Ãâ·Ñ°æÏÂÔØBoulder IRB #25-0777), investigating favorite music listening and brain activity in young adults. 

The total expected time commitment is approximately 4.5 hours. Research activities will take place over several weeks, according to your availability and the researchers’ availability. Participating in this study involves: 

1. Completing an online survey (30 minutes) 
2. One in-person visit to the Brain Music Lab (Roser ATLAS building) on Â鶹Ãâ·Ñ°æÏÂÔØBoulder’s Main Campus (90 minutes) 
3. A practice MRI session (30 minutes), online survey (30 minutes) and an MRI scan (90 minutes) at the Center for Innovation & Creativity (CINC), located just east of Â鶹Ãâ·Ñ°æÏÂÔØBoulder’s Main Campus

Even if you enroll in this study, you may not qualify for all of these research activities. Individuals who complete parts one and two will be compensated with a $20 Amazon gift certificate. Individuals who also complete part three will be compensated with an additional $20 Amazon gift certificate, plus an image of their brain. 

Eligibility

Eligible individuals must:

• 18–25 years old
• Be native English speakers
• Have little-to-no musical training
• Be able to undergo MRI (see specific MRI requirements; not pregnant)
• Be right-handed
• Have normal, or corrected-to-normal, hearing and vision
• Have no music processing-related disorders 
• Have no recent psychiatric diagnoses, and not recently taken psychiatric medications (within six months) 
• Be able to attend in-person sessions at the ATLAS Institute on Â鶹Ãâ·Ñ°æÏÂÔØBoulder’s Main Campus, as well as at the Center for Innovation and Creativity (CINC)

Reimbursement for transportation/parking is not provided. Please email Researcher Sophia Mehdizadeh (some4995@colorado.edu) with any questions. 

Join the Young Emerging Adult Research Study (YEARS) study at Â鶹Ãâ·Ñ°æÏÂÔØBoulder and Â鶹Ãâ·Ñ°æÏÂÔØAnschutz (IRB# 23-2067) to understand emotions. 

Earn $25 per hour (up to approximately $400 total) for up to three study session phases (one hour and 45 minutes). Must be 18–25 years, be able to attend in-person sessions and have a personal history of bipolar disorder or no mental health history.

You may be eligible to participate if you: 

• Are 21–40 years old
• Have used cannabis for at least one year
• Are right-handed 

This study involves: 

• One appointment at our lab facility in Boulder
• Two appointments in our mobile lab (we drive to a location convenient to you)
• Blood draws
• EEG recording
• Cognitive tasks
• Brief questionnaires

More male participants needed!

Join the Young Emerging Adult Research Study (YEARS) study at Â鶹Ãâ·Ñ°æÏÂÔØBoulder and Â鶹Ãâ·Ñ°æÏÂÔØAnschutz (IRB# 23-2067) to understand emotions. Earn $25 per hour (up to approximately $400 total) for up to three study session phases (one hour and 45 minutes). 

Must be 18–25 years, be able to attend in-person sessions and have a personal history of bipolar disorder or no mental health history.

You may be eligible to participate if you: 

• Are 21–40 years old
• Have used cannabis for at least one year
• Are right-handed 

This study involves: 

• One appointment at our lab facility in Boulder
• Two appointments in our mobile lab (we drive to a location convenient to you) 
• Blood draws 
• EEG recording 
• Cognitive tasks 
• Brief questionnaires 

More male participants needed!

The LILAC Study is investigating how menopause affects vascular health and fat gain—factors that may contribute to the increased risk of heart disease in women. This important work could help improve prevention and treatment strategies for women’s health.

Who can participate? Researchers are seeking:

• Females ages 20–55
• Non-smokers
• Individuals not currently using hormonal contraceptives (non-hormonal IUDs are OK)

Compensation of up to $800 is provided. Participation includes an optional eligibility survey.

Currently enrolled or working at the Â鶹Ãâ·Ñ°æÏÂÔØBoulder campus? The University Libraries would like to hear from you.

We are looking for approximately a dozen participants for a remote 20-minute usability session for summer 2026. Participants will be asked to complete common library search tasks, such as looking for a book, and let us know how well the library search performs.

As a token of our appreciation for your time, you will receive a $10 Amazon gift card. Questions can be directed to Nicole Trujillo at nicole.trujillo@colorado.edu.