AFI115Investigative Interview Techniques to Detect Lies (by Jeffery Ang)


The training is designed with an experiential approach to allow participants to understand the application of knowledge and skills taught. Our leading practitioner and trainer is able to appreciate the practical aspects as well as training methodology to allow effective transfer of practical knowledge that will translate to improvement of the interview function.


Course Fee SGD 580
Course Duration 1 Day
Course Timing 9:00am - 5:00pm
Course Venue M Hotel or similar
SDF Approved NA
Skills Future Credit NA
Upcoming Courses

Interviews are used extensively to establish the facts of a case, complaint or accuracy of information given. This course conducted by an experience practitioner trainer will provide participants with the application skills to conduct effective interviews to get the truth, the whole truth and nothing but the truth.

Analysis of recent high profile cases will be discussed with operational lapses and legal issues highlighted for participants to adopt the critical lessons learned from the interviews conducted and statements recorded including past practices from real cases collated and archived over 10 years. In addition customized training videos will also be shown to reinforce learning points.

At the end of the course the participants should be able to: 1. Understand the investigative interview process 2. Apply the interview strategy 3. Understand the psychology in detecting deception 4. Apply the system based detecting deception techniques 5. Appreciate the science and art of an interrogation

This course is packaged with the trainer's Book - Investigative Interview Techniques 1: The Truth about Catching Lies (A practical guide book on conducting interviews in an investigation)


a. The 3P Strategy© – Planning, Preparation & Presentation b. Effective interview structure and process c. Question techniques – formulation & design d. Legal issues including admissibility of statements e. Practical application on interview road map

Participants will be introduced to the various methods employed by leading practitioners to establish truthful information from interviewing subjects. The program provides the effectiveness of adopting the right strategy, acquiring the necessary skills and knowledge including the legal requirements in conducting interviews and recording statements. Also included is the mechanics in structuring questions so that skilful subjects are unable to avoid giving meaningful answers to questions posed. Through experience, it was discovered that this is the weakest link of even experienced interviewers. As such Jeffery has designed specific guidelines to deal with various situations like evasiveness including the effective use of follow-up questions.


a. Physiological & Psychological factors b. Micro facial expressions c. Verbal & non-verbal analysis d. 5C lie detection technique© e. Practical application at various stages

Interviewers must be able to uncover the truth, half-truths and lies from the interviewee. Granted that even the best trained and experienced interviewers, will not be able to detect lies one hundred percent of the time. But given the proper training and practice, practitioners can achieve a high successful rate in detecting lies. They will be taught how to read facial expression and identifying deceptive behavioral responses through non-verbal indicators and inconsistent verbal content. The interview system developed over many years of experience will provide an effective method of evaluating subject interviewed to obtain the truth, including screening of information provided in the interview. Many local cases will be used including videos on live interviews to allow participants to apply the techniques taught in detecting deception in different types of cases and context.

An insight into the science and art of interrogation using trickery and deception to create a perception that you have all the evidence and admission (or confession) is his best option will be demonstrated in a real case showcasing the 5-step technique used.

  • Professionals such as Auditors, Financial Controllers, Accountants, Lawyers, prosecutors, Law Enforcement Officers, Investigators, Educators.
  • Senior Management, Team Leaders, Line Managers, Anyone with a supervisory function.
  • Officers/ Managers in Recruitment, Human Resource, Procurement.
  • Officers/ Managers managing Feedback/ Complaints.
  • Officers/ Managers managing contractors/ vendors
  • Insurers, Charities, Businesses
  • anyone who wants to get the truth and establish evidence to support it.

Lecture and plenty of case studies.

Jeffery Ang

Jeffery Ang

Jeffrey Ang has extensive experience in training, conducting interviews and investigations. He was with the Singapore Police, Commercial Affairs Department and CID for 27 years investigating many fraud cases and dealing with major syndicates. He received a letter of appreciation from the recording industry (IFPI) in 1997 for leading a successful operation against a major fraud syndicate. Because of his vast experience he was selected to be the Training Officer for CID in April 1998. There he developed the Interview Techniques Course and became the pioneer instructor in the Course conducted by CID for all Police Investigators. He also played a major role in the setting up of the new School of Criminal Investigation for CID in 2001 and the development of the various Investigation courses until his retirement in Sep 2002. During that time he was presented with two Commendations and two Director CID Awards.

He has conducted many In-house Interview and Investigation courses for public and private organizations like the Commercial Affairs Department, Singapore and Malaysian Customs, Prisons, Ministry of Education, School clusters, Council for Private Education, BCA, IRAS, HSA, NEA, MINDEF, MTI, MOE, SGX, M1, CISCO, Prudential, Great Eastern Life, AIA and NTUC Income insurers, Institute of Singapore Chartered Accountants, Comfort Delgro, OCBC Bank, Mandarin and Orchard Hotel groups, Hilton Hotel group in Malaysia, Police Integrity Commission in Maldives, Fraud Investigation course for Ministry of Finance Afghanistan in Dubai, Fortune 500 Company Flextronics regional auditors in China where he received a Testimonial for providing an excellent program and many more.

He was the Head of Loss Prevention for Sentosa Island for 5 years overseeing the prosecution, enforcement, security and investigation functions with about 100 staff under him. In recognition for his outstanding performance, he received a Commendation from the Singapore Police Force for the year 2006.

He currently conducts training and consutancy globally. He is a practitioner trainer and licensed private investigator providing integrity interview for job applicants, staff interrogation and investigation services using the same techniques provided in his training. After he completed his first book on conducting Investigative interviews for distribution only in his course with overwhelming response, he decided to write his second book on conducting a non-confrontational interrogation. He wrote his third and final book Investigation 101 on conducting fraud and misconduct investigation because of overwhelming requests for such training and the increasing dishonest society we live in.

View Other Courses by Jeffery Ang