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Deputy Dean, School of Law, Deakin University

Marilyn McMahon is Deputy Dean of the School of Law at Deakin University.

She graduated from the University of Melbourne with BA (Hons)/ LLB degrees and obtained a Grad. Dip. Law and an M.Psychology (Forensic) from Monash University. She was awarded a PhD (with distinction) from La Trobe University for her thesis ‘From Mitigation to Exculpation: Battered Defendants, Expert Evidence and the Defences of Provocation and Self-Defence’.

In addition to her background in law, Dr McMahon is a registered psychologist.

Her teaching and research are principally in the fields of criminal law, criminal procedure, evidence and forensic psychology.

Dr McMahon has a particular interest in the intersection of the law and mental health issues.

She was previously a member of the Intellectual Disability Review Panel and is currently a member of the Mental Health Tribunal (Victoria), the Forensic Leave Panel and the Disciplinary Appeals Board.


  • 2019–present
    Professor, School of Law, Deakin University
  • 2012–present
    Associate Professor, School of Law, Deakin University
  • 2017–present
    Deputy Dean, School of Law, Deakin University
  • 2005–2012
    Senior lecturer, La Trobe University
  • 1997–2005
    Lecturer, La Trobe University


  • 2011 
    La Trobe University, PhD
  • 2000 
    Monash University, MPsychology (Forensic)
  • 1993 
    Monash University, Grad Dip Law
  • 1985 
    University of Melbourne, LLB
  • 1985 
    University of Melbourne, BA(Hons)

Professional Memberships

  • Australan and New Zealand Associatiion of Psychiatry, Psychology and Law
  • Melbourne, Australia
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  • Joined