Since 2015, Matthew has been working on the development and dissemination of mental wellbeing interventions across the Australian community at the South Australian Health and Medical Research Institute (SAHMRI). Matthew's PhD research was designed specifically to strengthen the translational work conducted by SAHMRI, and to solve problems that represented gaps in the literature that were arising when delivering mental wellbeing interventions into the community. The impact and relevance of Matthew's work has been demonstrated with invited presentations at international academic conferences, and multiple media stories with significant online engagements. 

Matthew's research investigates the dual-continua model, an innovative model of mental health. The dual-continua model of mental health suggests that mental illness and mental wellbeing reflect distinct continua, rather than the extreme ends of a single spectrum. This novel conceptualisation of the relationship between mental illness and mental wellbeing has significant implications in the way we promote mental health, and prevent, treat, and recover from mental illness. However, little is known about the evidence validating the model, and whether this evidence supports the implications that have been proposed in the literature. Matthew's PhD project synthesises the relevant evidence supporting the model, provides further evidence of the role of mental wellbeing in the recovery of mental illness, and addresses important limitations in the current assessment of mental wellbeing in the context of psychological distress and mental illness.

Matthew is engaged in the development of mental wellbeing services and products that emerge directly from the new knowledge generated from his PhD, translated into the community via SAHMRI. This has resulted in the development and evaluation of the Be Well Plan, and evidence-based wellbeing intervention (over 5,000 participants since 2020), and the Be Well Tracker, a free online assessment platform that Australians can use to assess and monitor their mental health (20,000 users since 2019). Matthew is the Host of Researching Happy, a podcast focused on the stories behind the studies in mental wellbeing and happiness research.