Evidence Act 2025 WA: Impact on Psychological Injury Claims
How the Evidence Act 2025 Changes the Landscape for Psychological Injury Claims in Western Australia
Western Australia's legal landscape is undergoing significant change. The introduction of the Evidence Act 2025 (WA) represents one of the most consequential legislative shifts for forensic psychology practitioners, legal professionals, and insurers operating in the state. Alongside the revised Signs of Safety Child Protection Practice Framework launched in July 2026, these developments are reshaping how psychological evidence is gathered, presented, and assessed across a wide range of proceedings — from criminal injuries compensation to personal injury litigation.
For lawyers, insurers, and individuals navigating these processes, understanding the intersection of updated evidentiary standards and psychological injury claims is no longer optional. It is essential.
What the Evidence Act 2025 Means for Expert Psychological Testimony
The Evidence Act 2025 introduces updated standards governing the admissibility and weight of expert testimony in Western Australian courts. For forensic psychologists preparing medico-legal psychological reports, this has direct and immediate implications.
Under the new framework, expert witnesses — including registered psychologists — are held to a more rigorous standard of transparency regarding:
- The methodology underpinning their clinical opinions
- The limitations of their assessments and diagnostic conclusions
- Their independence from the instructing party
- Compliance with AHPRA registration standards and the Australian Psychological Society's Code of Ethics
This mirrors the approach taken in jurisdictions that have adopted the Uniform Evidence Law, and brings Western Australia closer to national consistency in how expert reports are scrutinised. For legal practitioners, this means that poorly constructed psychological reports — those lacking clear methodology, diagnostic reasoning, or appropriate caveats — are now at greater risk of being challenged or excluded.
Instructing a properly qualified, AHPRA-registered forensic psychologist who understands these new requirements is not merely best practice. Under the Evidence Act 2025, it may determine whether your client's psychological evidence is accepted at all.
Criminal Injuries Compensation in WA: What Hasn't Changed (And What Has)
The Criminal Injuries Compensation Act 2003 (WA) remains the primary legislative framework for victims seeking compensation for physical and psychological injuries sustained as a result of criminal acts in Western Australia. The scheme provides for a maximum award of $75,000 for a single offence, with psychological injury — including recognised conditions such as PTSD, major depressive disorder, and adjustment disorders — constituting a substantial component of most successful claims.
Notably, the Act also provides for 'nervous shock' claims, allowing witnesses or family members who suffer a recognised psychiatric injury as a result of witnessing a violent offence to seek compensation, even where they were not the direct victim.
Common Reasons Claims Are Rejected
Despite the availability of the scheme, many claims fail at the assessment stage. The most common reasons include:
- Failure to report the offence to police, or significant delays in doing so
- Inadequate or absent psychological documentation establishing the nature and severity of the injury
- Reports that do not meet the evidentiary standards now reinforced under the Evidence Act 2025
- Failure to establish a causal nexus between the criminal act and the diagnosed psychological condition
These are precisely the pitfalls that a well-prepared criminal injuries compensation report in WA is designed to address. Comprehensive medico-legal reports that document symptom onset, severity, functional impairment, and treatment history — and that are authored by a forensic psychologist who can withstand cross-examination — significantly improve the prospects of a successful claim.
Psychological Reports for Court: Fitness, Sentencing, and Expert Evidence
Beyond compensation claims, psychological reports for court serve a range of critical functions in Western Australian criminal and civil proceedings:
- Pre-sentencing reports: Providing the court with context regarding an offender's psychological history, mental health diagnoses, trauma background, and treatment responsiveness
- Fitness to stand trial assessments: Evaluating whether a defendant has the cognitive and psychological capacity to meaningfully participate in their own defence
- Expert witness testimony: Offering independent clinical opinion on matters of psychological injury, capacity, or behavioural evidence
The Evidence Act 2025 heightens the scrutiny applied to all of these report types. Forensic psychologists must now be even more deliberate in distinguishing clinical opinion from factual observation, and must clearly articulate the evidence base for any diagnostic conclusion they present to the court.
Personal Injuries and Workers Compensation: The Broader Picture
Outside the criminal jurisdiction, personal injuries psychological reports in Perth play an equally vital role in motor vehicle accident (MVA) claims, workers compensation proceedings, and general personal injury litigation.
In these contexts, insurers and legal teams increasingly require psychological assessments that:
- Meet the standard for independent medical examinations (IMEs)
- Provide defensible opinions on causation, prognosis, and capacity for work
- Are authored by psychologists with specific forensic and medico-legal expertise — not generalist clinicians
With the legislative changes now in effect, reports that were considered adequate under the old evidentiary framework may no longer pass muster. Legal Aid WA's weekly legislative alerts have consistently flagged the pace of change, and practitioners who fail to update their instructions to experts accordingly risk compromising their clients' positions.
The Role of the Revised Signs of Safety Framework
For matters involving child protection — whether in Family Court proceedings, care and protection applications, or associated criminal matters — the WA Government's revised Signs of Safety Child Protection Practice Framework (July 2026) introduces new expectations around how psychological evidence is gathered and interpreted in relation to vulnerable children and families.
Forensic psychologists engaged in these matters must now be familiar with how the revised framework interfaces with their assessment obligations, particularly where psychological reports are being used to inform child protection decisions or to support or contest intervention orders.
What Legal and Insurance Professionals Should Do Now
Given these concurrent legislative developments, we recommend the following practical steps:
- Review your current instructions to psychological experts to ensure they align with the admissibility standards under the Evidence Act 2025
- Engage AHPRA-registered forensic psychologists with demonstrated medico-legal experience, not general practitioners
- Document psychological injury early — delays in assessment and reporting remain a leading cause of claim failure under the Criminal Injuries Compensation Act 2003 (WA)
- Brief your clients on the importance of police reporting and contemporaneous documentation from the outset
- Seek specialist input on any matter involving child protection frameworks to ensure reports are consistent with the revised Signs of Safety approach
Speak With Perth's Forensic Psychology Specialists
At Cygnet Medico-Legal Psychologists, our AHPRA-registered forensic psychologists prepare authoritative medico-legal psychological reports, criminal injuries compensation reports in WA, psychological reports for court, and personal injuries psychological reports across Perth and Western Australia. We understand the new evidentiary landscape and ensure every report we produce meets the rigorous standards now required under the Evidence Act 2025.
Whether you are a solicitor, insurer, or individual seeking assessment, we are available to discuss your matter and provide timely, expert reports that serve the needs of the court and your clients.
Fremantle: (08) 9467 6373 Midland: (08) 9467 7676
Cygnet Medico-Legal Psychologists — Forensic Psychology for Western Australia's Legal and Insurance Professionals.