Joanne Cassar is a clinical psychologist who has previously worked as part of the CREMS team delivering behavioural activation therapy to people with comorbid substance dependence and depression. Jo has a master of clinical psychology from Macquarie University. For a number of years she has worked at UNSW as well as in private practice. She works with a variety of clinical presentations and has a particular interest in the comorbidity of substance use disorders and other psychiatric presentations along with the impact of mental health and substance use on families. Jo currently works at the UNSW Fatigue Clinic where she treats patients with chronic fatigue syndrome and other fatigue disorders. She continues to be involved in research and publications relating to substance use and other comorbid mental health disorders.