Indermaur graduated from the University of Western Australia, obtaining a masters in clinical psychology in 1979 and a Doctor of Law in 1997.
[1] In 1976 he worked as a psychologist for prisoners in Western Australia, researching public views on punishment for crimes and court sentencing.
[2] In the 1980s and 1990s Indermaur worked on criminal investigations involving drugs and violent crime.
[3] His research involves the decision making processes of violent crime offenders in Australia.
[4][5] Later in the 1990s, Indermaur researched crime prevention, domestic violence, and road rage.