Current studies

Are you a twin or higher order multiple (HOM)? A very precious gift that only you can give is the donation of your time to a twin study. By sharing insights from your special twin relationship, you can help researchers make discoveries that benefit everyone’s health.

Below are our latest studies seeking twins and HOMs. You’ll find there are many ways to get involved – and often it is as simple as completing a questionnaire but this can be invaluable to research.

If you are interested in any, please click on the individual study link. We’ll email you with further details. If you’d like to be alerted when a new study begins, please contact us. TRA and our researchers appreciate your time and interest.

  • GenV (Generation Victoria)
    Eligibility: All children born in Victoria between 4th October 2021 and 3rd October 2023 GenV, short for Generation Victoria (, is a research project from the Murdoch Children’s Research Institute. All Victorian children born over two years (October 2021 – October 2023) and their parents are invited to take part. This includes multiple birth families! Currently, more […]
  • How does diet impact male reproductive health?
    Eligibility: Identical and fraternal, healthy male twins – aged 18-45 years. We have seen a shift in dietary patterns with increased consumption of processed, easily accessible foods. Minimal attention has been placed on what changes occur to sperm as a result of differences in diet, and whether this can impact the health of future offspring. […]
  • Health Behaviours and Screening Questionnaire
    Eligibility: All adult twins and higher order multiples currently living in Australia This study will investigate twins’ views and habits regarding health providers and available screening tests. We will ask about your health and behaviours around screening in an online questionnaire. We will also ask a small number of participants to take part in an […]
  • The Victorian Population Twin Cohort Study
    Eligibility: All twins born or living in Victoria. Data routinely collected by State Governments (such as hospital data) are increasingly being used in health research. Twins are often excluded from these research projects because it is difficult to identify them in the data. This means twins are being underrepresented in health research, which limits the […]
  • Genetics of risk for and resilience to mental health problems
    Eligibility: Only twins who previously participated in the “Resilience and vulnerability to mental health problems’” in 2021-2022. Thank you to those members that participated in our recent study ‘Exploring genetic and environmental influences on resilience and vulnerability to mental health problems’. We are very pleased to say that the study was a big success! We received 1,911 responses, 697 […]
  • Australian Twins & Sisters Mammographic Density Study Follow-Up
    Eligibility: Identical and fraternal female twins who previously participated in the Australian Twins and Sisters Breast Density Study (2005-2007).   Breast cancer is the most common form of cancer in Australian Women. Each year, almost 17,000 women are newly diagnosed, and nearly 3,000 women die from breast cancer. Epidemiological studies have identified a number of factors […]
  • Twins FluTracking Survey
    Eligibility: Open to twins and higher order multiples (HOMs) of all ages – identical and fraternal – and parents of twins/HOMs. This special Twins FluTracking Survey enrolment has been developed especially for twins/HOMs to report if they’ve had symptoms of flu in the past week.   The project is a joint initiative of the University of Newcastle, […]