His research has focused on identification of people at risk of mental health problems after trauma, early intervention strategies, treatment strategies for posttraumatic stress, and complicated grief.
Professor Bryant also works on many major national and international projects, including developing the Australian NHMRC PTSD treatment guidelines, web treatments for US troops returning from Iraq, tsunami survivors in Thailand, developing counselling programs for disaster survivors in the USA after Hurricane Katrina, and web-based treatments for complicated grief patients in the USA.