Clinical trials · California
Behavior clinical trials in California
We’re tracking 90 recruiting behavior studies with a site in California — including Phase 2 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT07125235Recruiting
Support program for HIV treatment adherence
This trial tests a program to help people with HIV stay on track with their medication. If you take HIV medication, sometimes miss doses, and use stimulants, this program may offer support to improve your health.
San Francisco, CaliforniaAges 18–70 - NCT07110688Recruiting
Brain sensing study for mental states
This trial uses sensors and machine learning to understand mental states in healthy adults and people with epilepsy. Researchers aim to improve how we monitor and support mental health.
Downey, CaliforniaAges 18 years+ - NCT07088406Recruiting
Mother-daughter fitness program for young Latina girls
This study tests a 10-week program where mothers and daughters do physical activities together to help girls become more active. It is designed for Latina families who want to be more active and healthier.
San Diego, CaliforniaAges 8–65 - NCT07075536Enrolling by invitation
Web tool for birth control decisions with health conditions
This trial tests a web-based tool designed to help people with health conditions make informed choices about birth control. If you have a medical condition or take certain medications and want to discuss contraception with your doctor, this tool may help guide your conversation.
Pomona, CaliforniaAges 18–49 - NCT07048574Recruiting
Mood and behavior in children with cystic fibrosis
This study looks at mood and behavior in children with cystic fibrosis (CF) under 12. By following children over time, researchers hope to better understand and help with depression, anxiety, and behavior challenges that may come up.
Orange, CaliforniaAges 1.5 years–11 years - NCT07036705Recruiting
Sauna blanket and app for better sleep in insomnia
This study tests whether using a heated sauna blanket before bed, along with a mind-body app, can help adults with insomnia fall asleep faster and sleep better. You would use the blanket at home for a few weeks and answer questions about your sleep.
San Francisco, CaliforniaAges 18 years+ - NCT07042152Recruiting
Wearable device and coaching to improve arm use after stroke
This study tests whether a wearable device that tracks arm movement, plus coaching to use your weaker arm more, can help you recover better after a stroke. It's for people who are at least 6 months past their stroke and have some arm weakness but can still use their hand.
Irvine, CaliforniaAges 18–84 - NCT07035418Recruiting
Young adults' role in cancer care decisions
This study looks at how much young people with cancer (ages 15–29) want to be involved in making decisions about their care. It's for those currently on treatment, at end of life, or who finished treatment up to a year ago.
Palo Alto, CaliforniaAges 15–29 - NCT06909097Recruiting
Strength breaks vs walk breaks for desk workers
This trial compares taking short strength exercises (like squats) versus walking breaks during the workday. It aims to help people who sit a lot at work find a simple way to move more and improve their health.
Palo Alto, CaliforniaAges 30 years+ - NCT06886217Enrolling by invitationPhase 2
Helping children with attention and behavior problems at school
This study tests a program that helps parents and teachers work together to support children with attention and behavior problems. If your child has trouble focusing or following rules in the classroom, this study may offer strategies to help them succeed.
San Diego, CaliforniaAges 7 years+ - NCT06809348Recruiting
Personalized suicide prevention study for adults
This study is testing a new, personalized program to help people who are having current suicidal thoughts. It uses data about you to create a suicide prevention plan that fits your life.
San Diego, CaliforniaAges 18–65 - NCT06803329Recruiting
Social connection program to prevent suicide in LGBTQ+ veterans
This study tests a program called Qnnections designed to help LGBTQ+ and other minority veterans feel more connected and reduce suicide risk. It is for veterans who have had recent suicidal thoughts or behaviors and are already working with a mental health provider.
San Diego, CaliforniaAges 18 years+ - NCT06776991Recruiting
Social anxiety and public speaking fear study
This study tests if reward processing training combined with exposure therapy helps people with social anxiety disorder who are afraid of public speaking. Participants will complete therapy sessions and possibly an MRI brain scan.
Los Angeles, CaliforniaAges 18–60 - NCT06415721Recruiting
TMS guided by brain scans for alcohol use disorder
This study uses a brain stimulation technique called TMS combined with MRI scans to treat alcohol use disorder. It aims to see if targeting specific brain connections can help reduce drinking.
Palo Alto, CaliforniaAges 25–75 - NCT04532424Recruiting
Brain stimulation for repetitive behaviors in autism
This trial tests whether transcranial magnetic stimulation (a non-surgical treatment using magnets on the scalp) can reduce restricted and repetitive behaviors seen in autism. It’s designed for people with autism who have high levels of certain repetitive behaviors, like insistence on sameness or unusual interests.
Stanford, CaliforniaAges 12–45 - NCT06640803Recruiting
Early psychosis risk stepped-care program
This study offers a step-by-step care program for teens and young adults at high risk for psychosis. It aims to provide the right level of support early on to prevent or reduce the severity of symptoms.
Elk Grove, CaliforniaAges 12–25 - NCT06581484Recruiting
Improving care for adults with congenital heart disease
This study aims to improve care for adults with congenital heart disease. If you join, researchers will work to better understand your needs and help enhance your treatment.
San Francisco, CaliforniaAges 18 years+ - NCT06444360Recruiting
Program to reduce stimulant use and risky sex in young adults
This study tests a program to help sexually active young adults reduce stimulant use and risky sexual behavior. It involves online coaching sessions, and you can join from home if you have a private space and video chat access.
Los Angeles, CaliforniaAges 16–24 - NCT06373718Recruiting
How sleep affects emotions in insomnia with low mood
This study explores how improving sleep might help regulate emotions in people who have both insomnia and mild depressive symptoms. You could help researchers understand the link between sleep and mood.
Palo Alto, CaliforniaAges 18–65 - NCT06362733Recruiting
Therapy for Autistic Youth Who Need Sameness
This study tests a type of therapy for autistic children who have a hard time with changes or need things to stay the same. It focuses on helping with that 'insistence on sameness' behavior.
Stanford, CaliforniaAges 4–17 - NCT06194851RecruitingPhase 2
Oxytocin nasal spray plus couples therapy for Veterans with PTSD
This study tests whether a nasal spray of oxytocin (a natural hormone) can boost the effects of a brief couples therapy for Veterans with PTSD. You and your partner would receive either the spray or a placebo (inactive spray) during therapy sessions to see if it helps reduce PTSD symptoms and improve relationship satisfaction.
San Diego, CaliforniaAges 18 years+ - NCT06194305RecruitingPhase 2
Brain and behavior study of tic therapy for kids
This study tests a behavioral therapy (CBIT) for children with tics. It uses brain scans (MRI and EEG) to see how the therapy works. It may be a good fit for a child who has had tics for at least a year and hasn't had much of this therapy before.
San Diego, CaliforniaAges 10–17 - NCT06110091Recruiting
Improving nighttime urination and sleep in older veterans
This study aims to improve nighttime urination (nocturia) and sleep in adults 60 and older. It offers a program that combines behavioral techniques for both bladder control and insomnia, with weekly visits at an Atlanta VA clinic.
Los Angeles, CaliforniaAges 60 years+ - NCT06127277Enrolling by invitation
Mobile relationship program for youth in foster care
This study tests a fully mobile program designed to help youth in foster care build healthy relationships. If you join, you'll use an app on your device to learn skills and connect with others.
Berkeley, CaliforniaAges 16–19
Where these studies are running in California
Institutions with a site for the recruiting behavior studies listed above.
- Stanford University · 3 studies
- San Diego State University · 2 studies
- University of California, Los Angeles · 2 studies
- University of California, San Francisco · 2 studies
- VA San Diego Healthcare System, San Diego, CA · 2 studies
- 401 Quarry Road (Remote Study)
- 8980 Villa La Jolla Drive
- Capital Star Community Services
What taking part in a behavior study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Common questions
- Are there behavior clinical trials in California?
- Yes. We're currently tracking 90 recruiting behavior studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a behavior study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a behavior trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New behavior studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.