Currently Enrolling!
The Twin Experiences & Mental Health Study
The Schaefer Lab is conducting a research study to learn more about how daily experiences might affect mental health and thinking. We are seeking eligible twins between 18-26 years old to participate. Study assessments can be completed remotely, and participants may be compensated up to $1,725 for their time and effort! Your participation will help contribute to scientific knowledge and a better understanding of brain health and behavior. If you are interested, please call (615) 484-5648 or email VUTRC@vanderbilt.edu to see if you and your twin are eligible!
What’s Involved in Participation?
This 2-year study is conducted entirely remotely. Participants will be asked to complete several types of assessments about their day-to-day experiences and potential substance use and will receive up to $1,725 for their time and efforts.
Study activities include:
Virtual Interviews
Virtual interviews at baseline and every 6 months.
Neuropsychological Assessments
Assessments of thinking and memory, completed at baseline and every 6 months.
Weekly Surveys
One 5-minute remote survey completed each week for 2 years.
Daily Surveys
Short daily remote surveys completed during four separate 2-week periods (once at the beginning of the study, once at 3 months, 6 months, 9 months, etc).
Frequently Asked Questions (FAQ’s)
Why do you need twins?
Twins are useful for this research as they offer special insights into the different origins of human behavior.
How long will I be in this study for?
Study participation lasts 2 years.
What are my responsibilities if I join this study?
Participants are responsible for completing remote assessments in a timely manner and accurately answering study questions to the best of their abilities.
What happens if I say yes but change my mind later?
You can leave the research study at any time; it will not be held against you.
IRB#: STUDY00000241 · Approved: 12 May 2026
The Twin Experiences & Mental Health Study
Fill out the interest form