a growing consortium of forensic psychiatrists
your direct link to experts in forensic psychiatry

Amicus is a growing consortium of forensic psychiatrists providing an 
easy link between barristers and expert witnesses and report writers
 in the field of psychiatry. Members are chosen for experience and
 excellence in their chosen area and adherence to the Code of Conduct
 for Expert Witnesses set out in the Judicature Act 1908. Typical areas 
of expertise include Court reports relating to fitness to stand trial
 and the insanity defence, however a wide range of other mental health 
factors may have a bearing on Court processes, both civil and

Our members have experience in Youth, District, Family and 
High Court jurisdictions as well as the appellate Courts. A number of 
civil forensic needs including immigration reports and worker’s
 compensation are available. As with all expert witnesses, our primary
 duty is to the Court, and we work to provide unbiased information in
 accordance with national and international standards.

Dr Goodwin is a Registered Medical Practitioner. He holds Vocational Registration in the field of Psychiatry. He has the qualifications MBChB (Otago) 1986 and FRANZCP, 1996. He received the Marjory McCallum Medal for Clinical medicine from the University of Otago in 1986. Dr Goodwin has extensive Post-Graduate training and experience in the fields of Consultation Liaison Psychiatry (the sub-specialty of Psychiatry that deals with the overlap between physical and mental disorders) and Forensic Psychiatry.

He is a Foundation Member of the Royal Australian and New Zealand College of Psychiatrists Faculty of Forensic Psychiatry and has held a number of senior posts in the Auckland Regional Forensic Psychiatry service. Dr Goodwin has extensive experience in the preparation of reports for District and High Courts throughout New Zealand. He has appeared as an Expert Witness before District Courts, the High Court, Court of Appeal and Courts Martial, as well as Coroner’s Hearings over the last 17 years. In addition he has extensive experience in the preparation of reports for preventive detention and public protection orders He is also an Honorary Clinical Lecturer in Psychological Medicine at the University of Auckland.

Dr Ian Goodwin
Dr Davin Tan

Dr Davin Tan, MBChB, FRANZCP, Cert Child Psychiatry.
Davin grew up in New Zealand and graduated from Auckland Medical School with distinction in surgery but had set his sights on psychiatry. He is a Fellow of the Royal Australian and New Zealand College of Psychiatrists and has worked across a number of community and inpatient settings in Australia and New Zealand as a specialist in General and Child-Adolescent psychiatry. 

Davin has provided comprehensive assessment and treatment to youth while working for the Regional Youth Forensic Service in Auckland where he also wrote medico-legal reports for the Youth, Family and District Courts. Davin is presently a Consultant Psychiatrist at the Mason Clinic, Regional Forensic Service in Auckland. He has a range of interests within the realm of Forensic Psychiatry but has particular interest in the medico-legal assessment of youth and conducts research in the area of Juvenile Fitness to Stand Trial in New Zealand. Davin is an honorary lecturer at the University of Auckland teaching topics in the area of child psychiatry and youth forensic psychiatry.

Dr Caleb Armstrong, MBChB, MMedSci(Hons), FRANZCP, Cert Forensic Psychiatry

Caleb Armstrong is a Fellow of the Royal Australian and New Zealand
College of Psychiatrists, and an International Fellow of the American Psychiatric Association

He has worked across Australasia in clinical 
and medicolegal contexts, including Auckland's Regional Youth Forensic 
Service. Dr Armstrong has a private clinical practice and a particular interest in criminal and civil forensic cases, with experience writing
 reports on issues ranging from the insanity defence to worker's
 compensation for mental injury. As well as experience as an expert
 witness giving testimony in District, Youth, Family and High Courts, Dr 
Armstrong is an Honorary Senior Lecturer for the Universtity of Auckland and is published in the area of fitness to stand trial in the Youth Court.  He is the New Zealand representative to the Section of Child and Adolescent Forensic Psychiatry of the Royal Australian and New Zealand College of Psychiatrists.

Dr Caleb Armstrong
Commonly requested expert reports include:
The list below shows some of the most common requests for reports our
psychiatric experts perform for the Courts.
Adult psychiatric reports (e.g. fitness to stand trial, insanity)
Elderly psychiatric reports
Offenders with Intellectual Disability
Child/adolescent psychiatric reports
Developmental Immaturity
Forensic psychiatry expert witness reports
Mental Health Act Second Opinion Reports
Mental health tribunals
Anxiety and depression
Psychosis including schizophrenia
Personality disorders
Post Traumatic Stress Disorder (PTSD)
Capacity to Instruct
Impact of mental health upon parenting
Post-natal depression and puerperal psychosis
Immigration Reports
Testamentary Capacity
Sexual Offending Risk
Head Injury
Accident Compensation Corporation (ACC) matters
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