PEACE Model (Eric Shepherd, UK Investigative Interviewing Group)
1. Introduction to the PEACE Model
The PEACE Model is one of the most respected frameworks for ethical investigative interviewing. It is used by investigators, law enforcement officers, compliance teams, internal inquiry officers, workplace investigators, and security professionals to gather accurate, reliable, and legally defensible information. Unlike confession-driven interrogation methods, the PEACE Model focuses on truth-seeking, professional communication, structured questioning, and fair treatment of the interviewee.
The model was developed to reduce the risk of coercion, false confessions, poor questioning, and investigative bias. Its purpose is not to pressure a person into admitting wrongdoing. Instead, it helps the investigator obtain a complete and accurate account of events. This makes the model especially useful in criminal investigations, workplace misconduct inquiries, corruption investigations, disciplinary hearings, fraud investigations, intelligence interviews, and victim or witness interviews.
The PEACE Model is also closely aligned with modern principles of human rights, legal compliance, professionalism, and accountability. The UK College of Policing identifies investigative interviewing as a structured process designed to obtain accurate and reliable accounts from victims, witnesses, and suspects.
For investigators and trainees, mastering the PEACE Model is important because it develops disciplined thinking. It helps the interviewer plan properly, build rapport, ask effective questions, manage the interview professionally, and evaluate the quality of information after the interview. The model shifts the investigator’s mindset from “getting a confession” to “gathering reliable information.” This is the foundation of professional investigation practice.
2. Background of the PEACE Model
The PEACE Model was developed in the United Kingdom in the early 1990s by experts associated with investigative interviewing reform, including Eric Shepherd and the UK Investigative Interviewing Group. It emerged after serious concerns about unethical interviewing methods, coercive practices, unreliable admissions, and wrongful convictions. The uploaded source identifies the model as a structured response to confession-based interviewing and as a move toward fairness, professionalism, and information gathering.
Before the PEACE Model became widely known, many investigative interviews were heavily focused on confession. In some cases, suspects were pressured, manipulated, or led into making unreliable statements. This created a serious risk of false confession, where a person admits to something they did not do because of pressure, fear, confusion, vulnerability, or poor interview practice.
Modern research continues to show that interview style matters. Coercive or guilt-presumptive approaches can increase the risk of unreliable information, while ethical and information-gathering approaches support better investigative outcomes. A 2024 study published through the National Library of Medicine examined how interrogation tactics and interview manner can affect true and false confession outcomes.
The PEACE Model also developed within the broader legal environment of the United Kingdom, including the Police and Criminal Evidence Act 1984 and related Codes of Practice. These legal standards support fairness, proper treatment of suspects, accurate records, and lawful questioning. The UK Government’s PACE Code C provides guidance on the detention, treatment, and questioning of persons by police officers.
Over time, the PEACE Model gained international recognition because it offers a balanced, structured, and ethical approach to investigative interviewing. It is now studied and applied in many countries and sectors beyond policing, including corporate investigations, regulatory investigations, workplace misconduct inquiries, compliance interviews, and public sector disciplinary processes.
3. What is the PEACE Model
The PEACE Model is a five-stage framework for conducting investigative interviews in a structured, ethical, and professional manner. It guides investigators from preparation before the interview to evaluation after the interview.
The word PEACE represents five key stages:
P – Planning and Preparation
E – Engage and Explain
A – Account
C – Closure
E – Evaluation
Each stage supports a different part of the interview process. Together, they help the investigator remain focused, fair, objective, and systematic. The College of Policing describes the PEACE framework as having five phases, beginning with planning and preparation and continuing through the complete interview cycle.
The PEACE Model is not simply a questioning technique. It is a complete interviewing philosophy. It requires the investigator to respect the interviewee, avoid leading questions, listen actively, clarify information, test the account against evidence, and review the quality of the interview after completion.
In simple terms, the PEACE Model helps investigators answer five important questions:
- What must I prepare before the interview?
- How should I engage the interviewee professionally?
- How can I obtain a full and accurate account?
- How should I close the interview properly?
- How should I evaluate the information and my own performance?
This makes the model highly valuable for investigators who need interviews that are credible, structured, ethical, and defensible.
4. Components / Stages of the PEACE Model
The PEACE Model consists of five structured stages that guide the investigator from preparation to post-interview review. Each stage plays a critical role in ensuring that the interview is ethical, systematic, and focused on accurate information gathering. The stages are not isolated—they are interconnected and must be applied as a continuous process to achieve effective outcomes.
P – Planning and Preparation
Planning and Preparation is the foundation of a successful investigative interview. Before the interview begins, the investigator must understand the case, identify the purpose of the interview, review available evidence, and prepare a clear interview strategy.
This stage includes reviewing documents, statements, CCTV footage, digital evidence, timelines, complaints, reports, witness accounts, and legal requirements. The investigator must know what information has already been established, what remains unclear, and what areas require clarification.
Good preparation also requires the investigator to define clear interview objectives. For example, the investigator may need to confirm a timeline, understand a person’s role, explore inconsistencies, identify motive, test an explanation, or obtain details about a specific event.
Preparation also includes arranging the interview environment. The location must be suitable, private, safe, and free from unnecessary distractions. Recording equipment, documentation materials, legal notices, interpreters, support persons, and interview rights must be considered where applicable.
The key principle is simple: a poorly planned interview leads to weak information, missed opportunities, and poor investigative control.
E – Engage and Explain
Engage and Explain focuses on establishing a professional relationship with the interviewee. This stage helps reduce anxiety, confusion, resistance, and misunderstanding.
The investigator begins by introducing themselves, explaining their role, outlining the purpose of the interview, and describing the interview process. This helps the interviewee understand what is happening and what is expected of them.
Engagement does not mean becoming overly friendly or biased. It means creating a respectful and professional atmosphere where the interviewee is more willing to communicate. Rapport-building can involve appropriate tone, calm body language, active listening, patience, and respectful language.
The investigator should also explain relevant rights, procedures, confidentiality limits, recording arrangements, and next steps. In suspect interviews, legal safeguards are especially important. PACE Code C, for example, addresses the treatment and questioning of persons in police detention and includes requirements linked to fairness and accurate interview practice.
The key principle is effective engagement builds trust, reduces resistance, and supports accurate information gathering.
A – Account
The Account stage is the core of the interview. This is where the investigator obtains the interviewee’s version of events.
The interviewee should first be encouraged to provide a free narrative account. This means allowing the person to explain what happened in their own words, with minimal interruption. Free narrative is important because it allows the person to recall events naturally and may produce information the investigator did not expect.
After the free account, the investigator can use open-ended questions to expand the information. Examples include:
“What happened next?”
“Can you explain that in more detail?”
“Who else was present?”
“What did you observe at that point?”
“Can you describe the sequence of events?”
The investigator should avoid leading, suggestive, aggressive, or confusing questions. The goal is not to force the interviewee into a preferred answer. The goal is to obtain information that can be tested against evidence.
During this stage, the investigator must listen carefully, observe communication patterns, note inconsistencies, clarify gaps, and maintain professional neutrality. The account should be explored fully but fairly.
The key principle is to let the interviewee speak, then clarify carefully and objectively.
C – Closure
Closure ensures that the interview ends professionally, clearly, and respectfully.
At this stage, the investigator summarizes the key points discussed. This gives the interviewee an opportunity to confirm, correct, or clarify the information. A proper summary reduces misunderstanding and helps ensure that the record reflects the interviewee’s account accurately.
The investigator should also ask whether the interviewee has anything else to add. This simple question can sometimes produce important information that was not covered earlier.
The closure stage should also explain what happens next. For example, the investigator may state that the information will be reviewed, compared with other evidence, or followed up if necessary. The interviewee should leave the process understanding the next steps.
A professional closure is important because investigations may require future interviews. Ending respectfully helps preserve cooperation and demonstrates fairness.
The key principle is a strong closure creates clarity, completeness, and professionalism.
E – Evaluation
Evaluation takes place after the interview. It is one of the most important stages because it helps the investigator assess both the information obtained and the quality of the interview process.
The investigator must review the interview and ask:
- Was the information relevant?
- Did the account remain consistent with other evidence?
- Were any contradictions identified?
- Did the interview reveal new leads?
- Have the interview objectives been achieved?
- Were any important questions overlooked?
- Did the interviewer conduct the session ethically and professionally?
Evaluation also includes self-reflection. Investigators must assess their questioning style, listening skills, rapport-building, note-taking, evidence handling, and ability to manage the interview structure.
This stage supports continuous improvement. It helps investigators become more disciplined, more accurate, and more professional in future interviews.
The key principle is evaluation turns interview experience into investigative learning.
5. How the PEACE Model Works in Investigation
In a real investigation, the PEACE Model works as a complete interview cycle.
The investigator begins with planning and preparation. This includes reviewing evidence, identifying gaps, setting objectives, and preparing suitable questions. Next, the investigator engages the interviewee by explaining the purpose, process, and expectations of the interview.
During the account stage, the interviewee provides their version of events. The investigator listens actively and uses open-ended questions to obtain detailed information. The investigator then clarifies unclear areas, explores inconsistencies, and tests the account against known evidence.
After the account is obtained, the investigator moves to closure. The main points are summarized, corrections are invited, and the next steps are explained. Finally, the investigator evaluates the interview by reviewing the information, comparing it with existing evidence, and identifying any further investigative action.
This structured process makes the interview more reliable and defensible. It also reduces the likelihood of coercion, bias, and incomplete questioning.
6. Case Study / Practical Example: Workplace Fraud Investigation
Imagine an investigator is assigned to a workplace fraud case involving a suspected employee. Financial records show unusual transactions, missing approvals, and irregular expense claims.
Using the PEACE Model, the investigator begins with Planning and Preparation. They review financial documents, identify suspicious entries, check approval workflows, examine email records, and prepare interview objectives. The investigator does not begin with an assumption of guilt. Instead, they identify what needs to be clarified.
During Engage and Explain, the investigator introduces themselves, explains the purpose of the interview, outlines the process, and establishes a professional tone. The employee is informed that they will have the opportunity to explain their account.
During the Account stage, the employee is invited to explain the transactions. The investigator listens carefully and allows the employee to speak without unnecessary interruption. Open-ended questions are then used to clarify dates, approvals, instructions, access to systems, and the reason for the transactions.
During Closure, the investigator summarizes the key points and gives the employee an opportunity to correct or add information. The session ends professionally.
During Evaluation, the investigator compares the employee’s explanation with financial records, system logs, approval documents, and witness statements. Any inconsistencies are identified for further investigation.
This example shows how the PEACE Model helps investigators remain fair, structured, and evidence-focused.
7. Application of the PEACE Model (Where & When to Use)
The PEACE Model can be used in many types of investigations where reliable information is required. These include:
Criminal investigations
Witness interviews
Victim interviews
Suspect interviews
Workplace misconduct investigations
Internal disciplinary inquiries
Fraud investigations
Corruption investigations
Compliance and regulatory investigations
Intelligence interviews
School and institutional investigations
Healthcare incident inquiries
Security and safety investigations
The model is especially useful when the investigator needs a clear, accurate, and legally defensible account. It is also helpful when dealing with cooperative or semi-cooperative interviewees because it encourages communication and detailed recall.
However, even when dealing with resistant or difficult interviewees, the PEACE Model remains valuable because it keeps the investigator structured, professional, and legally aware.
8. Strengths of the PEACE Model
The PEACE Model has several important strengths.
First, it promotes ethical interviewing. It reduces the risk of coercion, intimidation, manipulation, and unfair treatment.
Second, it supports accurate information gathering. By encouraging free narrative and open-ended questioning, the model helps interviewees provide fuller and more reliable accounts.
Third, it improves investigative professionalism. Investigators are required to plan, explain, listen, clarify, close properly, and evaluate their performance.
Fourth, it helps reduce the risk of false confessions. Because the model is not confession-driven, it avoids many dangers linked to aggressive interrogation methods.
Fifth, it creates a clear structure that can be taught, practiced, assessed, and improved. This makes it highly suitable for investigator training, workplace inquiry training, compliance investigation training, and law enforcement development.
9. Limitations of the PEACE Model
Although the PEACE Model is highly effective, it also has limitations.
First, it can be time-consuming. Proper planning, rapport-building, open questioning, and evaluation require time and discipline.
Second, it requires skill. Investigators must be trained in questioning techniques, active listening, rapport-building, evidence assessment, and interview control.
Third, it may be challenging when dealing with highly resistant, deceptive, aggressive, or manipulative interviewees. In such cases, the investigator must remain calm, structured, and evidence-focused.
Fourth, the model may be difficult to apply fully in urgent, high-risk situations where immediate information is required. However, even in urgent conditions, some elements of the model, such as preparation, clear explanation, and evaluation, remain useful.
The model should therefore be applied with professional judgment, taking into account the nature of the case, the interviewee, the available evidence, and the legal context.
10. Why the PEACE Model Is Important in Modern Investigations
Modern investigations require more than suspicion and questioning. They require fairness, evidence, documentation, accountability, and defensible decision-making.
The PEACE Model supports these requirements by helping investigators conduct interviews that are structured, ethical, and reliable. It helps protect both the investigation and the interviewee. It also improves public trust because it demonstrates that investigators are not simply trying to force an admission but are genuinely seeking the truth.
In workplace and corporate settings, the PEACE Model is equally useful. Employers, HR investigators, compliance officers, and inquiry managers can use the model to conduct fair interviews in disciplinary cases, harassment complaints, fraud allegations, safety breaches, and misconduct inquiries.
In training environments, the PEACE Model is valuable because it teaches investigators how to think, not just what to ask. It develops professional discipline, communication skill, evidence awareness, and reflective practice.
11. Summary of Key Points
The PEACE Model is a globally respected framework for ethical investigative interviewing. It consists of five stages: Planning and Preparation, Engage and Explain, Account, Closure, and Evaluation.
The model helps investigators move away from confession-driven interviewing and toward accurate information gathering. It promotes fairness, reduces the risk of false confessions, improves questioning quality, and strengthens investigative outcomes.
Its value lies not only in its structure, but also in its philosophy. The PEACE Model teaches investigators to be objective, prepared, respectful, evidence-focused, and reflective.
For law enforcement officers, workplace investigators, compliance professionals, security officers, HR managers, and trainee investigators, the PEACE Model remains one of the most important interviewing frameworks for modern professional investigations.
References
College of Policing. (2013). Investigative interviewing. College of Policing. https://www.college.police.uk/app/investigation/investigative-interviewing/investigative-interviewing
Government of the United Kingdom. (2023). PACE Code C 2019: Code of practice for the detention, treatment and questioning of persons by police officers. GOV.UK. https://www.gov.uk/government/publications/pace-code-c-2019/pace-code-c-2019-accessible
Legislation.gov.uk. (1984). Police and Criminal Evidence Act 1984. The National Archives. https://www.legislation.gov.uk/ukpga/1984/60/contents
Catlin, M., et al. (2024). Interview and interrogation methods and their effects on true and false confessions. National Library of Medicine. https://pmc.ncbi.nlm.nih.gov/articles/PMC11465838/
FIS International. (n.d.). PEACE: A different approach. https://www.fis-international.com/assets/Uploads/resources/PEACE-A-Different-Approach.pdf