Statement Analysis and Credibility Assessment
We provide independent forensic analysis of witness statements, complaint accounts, interview transcripts and written disclosures using recognised psychological and linguistic assessment methods.
Important limitation
Our role is not to determine whether someone is telling the truth. Rather, we identify features of an account that are consistent with genuine memory, areas requiring further investigation, and alternative explanations that should be considered.
Support for legal, corporate, safeguarding and private matters
The service is used where an account requires careful, independent review before decisions are made.
Legal
- Criminal investigations
- Civil litigation
- Regulatory proceedings
Corporate
- Workplace investigations
- Whistleblowing
- Professional misconduct
Safeguarding
- Child protection
- Vulnerable adults
- Historical allegations
Private Clients
- Complaint assessment
- Family disputes
- Anonymous allegations
A clear written assessment for decision-makers
Reports are prepared to explain both the findings and the boundaries of what can properly be inferred from the material.
- Summary of instructions
- Methodology used
- Analysis of narrative quality
- Internal consistency assessment
- Missing expected information
- Alternative explanations
- Investigative opportunities
- Professional opinion
- Limitations
Forensic, cautious and transparent
Assessments are conducted by Dr Keith Ashcroft, Investigative Psychologist and Forensic Polygraph Examiner, with conclusions framed around what the material can properly support.
Evidence-based
Uses CBCA, Statement Validity Assessment and Reality Monitoring where appropriate to the material.
Independent
Provides objective analysis without assuming a preferred outcome or advocacy position.
Transparent
Explains strengths, limitations and alternative explanations in clear professional language.
Experienced
Applies forensic psychological methods developed through extensive investigative practice.
Six clear stages
The process is designed to keep instructions focused and the conclusions properly bounded.
- 01
Initial Review
- 02
Case Materials Reviewed
- 03
Structured Statement Analysis
- 04
Competing Explanations Evaluated
- 05
Written Expert Report
- 06
Recommendations & Next Steps
Interpreted in the context of the case
Our assessments draw upon recognised forensic approaches including Criteria-Based Content Analysis (CBCA), Statement Validity Assessment (SVA), Reality Monitoring and cognitive psychology research concerning memory and recall. These methods are interpreted alongside the facts of the individual case. No single criterion is treated as proof that an account is true or false.
Why Statement Analysis May Be Useful Before a Polygraph Examination
Statement analysis is often helpful before a credibility assessment or polygraph examination. Reviewing an account in advance can identify ambiguous wording, omissions, inconsistencies and areas requiring clarification before formal testing. This helps define the scope of any subsequent examination and ensures relevant issues are addressed systematically.
Frequently Asked Questions
Practical answers for solicitors, investigators, organisations and private clients.
Can statement analysis determine whether someone is lying?
No. It can identify features of an account that require careful interpretation, but it cannot prove truthfulness or deception. Findings should be considered alongside the wider evidence.
Is statement analysis admissible in court?
It may assist legal teams in advisory or expert-report form. Admissibility depends on the court, jurisdiction, issues in dispute and the purpose for which the evidence is introduced.
What documents do you need?
We usually need the statement or transcript, relevant background materials, any earlier or later versions of the account, and clear instructions on the questions to be addressed.
Can you analyse WhatsApp messages, emails or text messages?
Yes, where there is sufficient content and context. Digital messages are assessed with caution because conversational fragments may not resemble formal witness statements.
How long does an assessment take?
Timescales depend on volume and complexity. A single-statement review is often completed within five to ten working days after materials and instructions are confirmed.
Will I receive a written report?
Yes. Where instructed, we provide a written report setting out the material reviewed, methodology, findings, limitations and recommended next steps.
Can solicitors instruct you directly?
Yes. Solicitors, organisations and private clients may contact The Centre for Forensic Neuroscience to discuss suitability, scope and required materials.
How much material is needed?
There must be enough narrative content to analyse. Very short messages or isolated phrases may be unsuitable unless they form part of a wider sequence or evidential bundle.
Discuss a Statement Analysis Instruction
If you would like an independent review of a witness statement, complaint account, interview transcript or written disclosure, please contact The Centre for Forensic Neuroscience for an initial discussion.
Make an Enquiry