International Speakers

Judge Peggy Hora, (Ret) California Superior Court Judge and former presiding Judge of the Drug Treatment Court in California, is an internationally acclaimed expert who has published, lectured and advised in the field. She is a former dean of the B.E. Witkin Judicial College of California and has been on the faculty of the National Judicial College (NJC) for 25 years. Among her numerous awards and honours, she is the recipient of the 2017 V. Robert Payant Award for Teaching Excellence presented by the Faculty Council of the NJC and was also inducted into the Stanley Goldstein Drug Court Hall of Fame.


Professor David Best, Professor of Criminology at Sheffield Hallam University in England holds a PhD in the psychology of addictions. He has published extensively on desistance and addiction recovery. His current research activities also include recovery pathways, recovery capital and its measurement, social identity theory and its implications for recovery, and addiction treatment effectiveness particularly in prison settings.  


Rob Hulls is the Director of the Centre for Innovative Justice at Australia’s RMIT University. Rob served as the Attorney-General and Deputy Premier of Victoria Government from 1999 to 2010. As Attorney-General, he instigated significant and lasting changes to Victoria’s legal system including setting up a number of specialist courts including the Drug Courts,  as well as the country’s first and only Neighbourhood Justice Centre.  In October 2012, Rob returned to his alma mater to set up the Centre for Innovative Justice as a place to develop, drive, and expand the capacity of the justice system to meet and adapt to the needs of its diverse users. 


Jane Pfeifer, holds degrees in Social Work and Psychology, and at Master’s level, Public Administration. Based in California, she is a Program Director at Children and Family Futures for the National Regional Partnership Grant program, and in past assignments she has led the Family Drug Court Mentor Court Project and the Family Drug Court Guidelines Project. Her expertise includes initiatives to improve outcomes for families affected by substance use disorders. She has also worked as a Probation officer, a Victims Advocate, and has taught Criminal Justice courses at the California State University Chico.


Dr Shannon M Carey, Co-President and Senior Research Associate at NPC Research, is a recognised expert with extensive experience in the evaluation of drug courts, including cost analysis. She was involved with developing and writing the seminal US national Adult Drug Court Best Practice Standards.



Paul L. Cary, MS, Toxicologist and former Scientific Director Toxicology Laboratory, University of Missouri Health Centre, with expertise in drug testing, and was involved with developing and writing the seminal US national Adult Drug Court Best Practice Standards.


Helen Harberts, JD, has worked as a prosecutor, rising to become the Chief Deputy District Attorney of the Criminal Division in Butte County, CA. She also served as a Chief Probation Officer (1995-2002) with responsibilities and expertise in adult Drug Courts, returning to senior Corrections roles later and lecturing and writing extensively on the adult Drug Treatment Court field.  She has been honoured for her work both as a Prosecutor and a Probation Officer and was inducted into the Stanley Goldstein Drug Court Hall of Fame.


Justice Mata Keli Tuatagaloa, Supreme Court of Samoa. Justice Tuatagaloa presides over the Samoa Alcohol and Drugs Court, which was launched in February 2016. Justice Mata Keli Tuatagaloa is the first female to be sworn in as a judge with the Ministry of Justice and Courts Administration in Samoa, initially in the District Court in 2011 and then in the Supreme Court in August 2015.

Douglas B. Marlowe, J.D., Ph.D. (speaking via prerecorded video prepared for the conference), is a Senior Scientific Consultant for the National Association of Drug Court Professionals (NADCP), Senior Science & Policy Advisor for Alcohol Monitoring Systems, and Training Consultant for the Global Institute for Forensic Research. He is a Fellow of the American Psychological Association (APA) and the College of Physicians of Philadelphia. A lawyer and clinical psychologist, Dr. Marlowe studies the impact of coercion in substance use disorder treatment, the effects of drug courts and other rehabilitation programs for persons with substance use disorders involved in the justice system, and behavioral treatments for persons with substance use disorders and justice system involvement. He has published over 175 journal articles, monographs, books, and book chapters on the topics of drug courts, correctional rehabilitation, forensic psychology, and treatment of substance use disorders. 

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