John Machlin began assessing and treating criminal offenders in the 1990s when he worked in the Western Australian justice system.  He has since established his reputation as an expert witness in the Local, District, and Supreme Courts of NSW, and has altogether conducted over 1000 independent forensic assessments.

Psychological reports typically include:
- Comprehensive background information to identify factors relevant to offending.
- Psychometric testing, eg, IQ, personality, emotional state, and specific clinical factors.
- Clear, scientifically-based conclusions and practical recommendations. 

Section 32 mental health assessments are prepared regularly.
John visits metropolitan and regional correctional centres throughout NSW.

Solicitor’s referral is required.


Independent opinions, usually on matters of personal hardship, can sometimes be used by solicitors to support immigration applications and appeals.  Detailed client interviews, family interviews, and psychometrics are used to compile comprehensive reports at the request of the referring solicitor.


Assessments include detailed interviews of injured claimants and other relevant parties, psychometric evaluation, opinion as to impact of injury, DSM-5 diagnosis, and therapeutic recommendations.  Claimants might be suffering conditions such as:

Post-Traumatic Stress Disorder
Other Anxiety Disorders
Depression and Other Mood Disorders
Adjustment Disorders
Grief and loss
Chronic Pain
Stress and Anger
Impact of Unfair Treatment and Harassment
Cyber bullying


Reasons for assessment (sometimes known as IME) include:
·       Determining whether psychological injury exists and whether it was brought about by workplace factors
·       Determining the validity of reported and presenting symptoms
·       Recommendations for rehabilitation or transition back to work. 

Assessments include comprehensive interviews, psychometric testing, and liaison with case managers, employers, treating clinicians and other relevant parties.  Opinions are backed by extensive clinical experience.  Findings are communicated clearly and thoroughly, with attention given to:

·       Contributing factors
·       Validity of reported and presenting symptoms
·       Psychometric test findings
·       DSM 5 Diagnosis
·       Applicability of the Workers Compensation Act (Sections 9A & 11A)
·       Treatment and return to work recommendations