Due to COVID-19 measures, the Phoenix Australia Traumatic Stress Clinic has temporarily suspended face-to-face appointments. Presently, recruitment for the IMPACT trial is open for treatment delivered via videoconferencing (available to Victoria residents only at this stage). We welcome expressions of interest for face-to-face treatment in the meantime.

The IMPACT trial is now recruiting in Melbourne


This study is looking at whether two known psychological treatments for posttraumatic stress disorder (PTSD), prolonged exposure and unified protocol, can help improve PTSD symptoms and quality of life.


Do you believe you may have PTSD? If YES, you may be eligible for the IMPACT trial where you will receive FREE psychological treatment for your PTSD.


Please contact the Trial Intake Officer on 1800 514 905 or register your interest below.

Please note the Phoenix Australia Traumatic Stress Clinic is not a crisis service. If you are in an emergency and require immediate assistance please call 000. If you require crisis support please call lifeline on 11 13 14.

Please note: Consent for the research team to communicate with your GP is a requirement for entering into the trial. Sharing our website information with your GP and other health professionals in your care team can be beneficial in preparing to potentially take part in this research. We also welcome contact from health professionals if they have any questions about our current research.

For referrers: We welcome referrers to contact us if they would like to refer a client. All clients will undergo a consenting process to participate in the trial.

Register interest

Am I eligible for the IMPACT trial?

To be eligible for the IMPACT Trial, the following criteria need to be met:*


  • Aged 18 or over
  • Have been diagnosed with PTSD or suspect that they have PTSD following a traumatic event
  • Currently reside in Victoria
  • Access to equipment for videoconferencing (ie computer and internet) for Telehealth
  • Able to attend weekly sessions
  • Have good English comprehension


Unfortunately, due to being a research trial, individuals who have been diagnosed with a current psychotic disorder such as schizophrenia, or bipolar affective disorder or mania, or a drug or alcohol addiction, will not be eligible to participate in the research program.  People who are suicidal or engage in self-harm behaviour and therefore unable to guarantee their own safety will also not be eligible for the study.


*Other inclusion and exclusion criteria apply, which will be advised upon contact and further assessed during an intake process to confirm eligibility.


What will the IMPACT trial involve?

The trial will involve 10 free 90-minute sessions with a specialist trauma clinician where you will learn new skills with one of the treatments – prolonged exposure or unified protocol – to help you to manage difficult emotions, overwhelming physical sensations, challenging symptoms such as unwanted memories or nightmares, anxiety, panic, low mood, and to get back to activities you used to do or enjoy.


You will also complete a face-to-face assessment and answer some questionnaires before and after treatment.


For more information about the trial including possible benefits and risks to participation please read our Plain Language Statement.


Who is conducting the IMPACT trial?

The IMPACT trial is being conducted by Phoenix Australia – Centre for Posttraumatic Mental Health, a national centre of excellence in posttraumatic mental health, affiliated with the University of Melbourne.

This research project has been approved by the Human Research Ethics Committee of The University of Melbourne (ID Number: 1853047.6).
Speak to our team for a free expert assessment and treatment. If you would like to participate or find out more about the trial, please contact the Trial Intake Officer on 1800 514 905 or register your interest below.

Register interest