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HomeTactical Polygraph

Tactical Polygraph

for ICAC Investigations

Certification Course


Course Duration: 40 hours

Course Description:

Law enforcement polygraph examiners are increasingly employed in Internet Crimes Against Children (ICAC) investigations as well as inquiries into other deviant sexual behavior. The "Tactical Polygraph" approach has emerged as a common practice to identify previously undisclosed victims and build evidentiary cases against those charged with sex offenses. The Institute of Police Polygraphy brings the latest research-based approach to this challenging and emerging field in a student-friendly, professional training environment. This course is specially designed for those examiners wishing to advance their knowledge and skills in Tactical Polygraph for ICAC Investigations and is open only to law enforcement examiners. This is a certification course and graduates will be designated as Certified Tactical Polygraphers for ICAC Investigations.

Course Topics:

Latest Research and Best Practices

The Institute of Police Polygraphy is devoted to developing and promoting best practices and empirically-based polygraph protocols. To that end, recommended testing methodologies for Tactical Polygraphs derived from the latest research studies and developing trends are presented throughout the course.

Best Techniques for Tactical Polygraph

In keeping with current validity testing, this course segment will explore recommended testing formats for diagnostic and single-issue screening tests as they apply to Tactical Polygraph exams. The UTAH Zone Comparison Test (3RQ) and the UTAH Modified General Question Test (4RQ/Raskin) formats have emerged as those with the highest confidence intervals and accuracy rates as well as the lowest overall inconclusive and error rates for single-issue testing. The UTAH test structures, question sequences, and scoring protocols are presented and examined.

Problems with Multi-Issue Screening Techniques for Tactical Polygraph

This course segment will explore problems and concerns associated with the use of multi-issue screening formats as they apply to Tactical Polygraph, specifically multiplicity and base-rate errors. Problems endemic to this technique can actually hinder, rather than enhance, information gain. A better approach is presented to increase overall information gain, aid in classifying offenders, and enhance efforts to identify previously undisclosed victims.

Inductive Interviewing

The greatest information gain is often found in the pre- or post-test interview. In this session, participants will explore a non-linear, non-confrontational approach to forensic interviewing known as the Inductive Interview System™. Rapport-building, identifying word cues, crafting clarification questions, recognizing the 10 Types of Lies, and employing specialized "induction" techniques, including Rationalizations and Minimizations, Presumptive Questions, Guilt Transfers, and Divergences, as they specifically apply to tactical polygraph examinations are covered in some detail. Many of the cases studies feature sex offenders encountered during ICAC investigations.

Updated ESS-M Test Data Analysis

The Empirical Scoring System - Multinomial has distinguished itself as the best of the various polygraph scoring systems in terms of criterion accuracy, ease of use, objectivity, and inter-rater reliability. However, many polygraphists are unfamiliar with ESS-M scoring protocols or have misapplied them in actual scoring. Accepted scoring methodologies and feature extraction, including Respiration Line Excursion and Vasomotor Measurement, are covered. Students also participate in a number of TDA scoring exercises from actual case studies.

PLCs v. DLCs: Advantages and Disadvantages for Tactical Polygraph

Both Probable Lie Comparison questions and Directed Lie Comparison questions play important roles in the field of polygraphy. The scientific/analytical theory of the polygraph is based on differential salience associated with the CQs. This segment explores the pros and cons of both PLCs and DLCs as applied to Tactical Polygraph, plus presents some innovative approaches for structuring and presenting both types of CQs, including the use of "Tiered DLCs" and "Inverse Mind-Maps."

Psychopathology of Sexual Deviancy

Sex offenders present unusual challenges to the Tactical Polygraph examiner. Experts in the field will present insights and case studies featuring the psychopathology that drives sexual deviants, sensitizing participants to behavioral clues associated with offender behavior.

Constitutional Issues

This segment provides a solid understanding of the constitutional principles and limitations placed on examiners by the 5th amendment and applicable court rulings, such as Miranda, so that their actions will pass court scrutiny.

Countermeasure Detection and Prevention

With the advent of the internet and unscrupulous practices by other examiners, the use of countermeasures is of increasing concern for the polygraphist. Specific "counter-countermeasure" techniques can minimize the risk of counter-measures, enhance identification, and discourage their use. Pros and cons associated with when and how to confront the examinee when countermeasures are suspected are also covered in this session, along with case study examples.

Sex Offender Case Studies

Throughout the course, case studies will be presented featuring Test Administration, Countermeasure Detection, Forensic Interviewing, Test Data Analysis, and Deviant Sexual Behavior.

Best Practices and Model Policies for Tactical Polygraph

As more and more agencies adopt Tactical Polygraph testing as a critical component of ICAC and sexual offense investigations, a disciplined approach that is empirically-sound, legally-justified, and team-based approach is needed. A best practices approach is presented with guidelines for establishing sound policies and procedures.

NOTE: Due to the nature of the course topics, much of the content is adult-themed featuring bizarre and disturbing behavior that some may find offensive.

Course content and instructors are subject to change.

Comments from Past IPP Graduates

One of (if not THE) best polygraph/police classes ever attended.

Classes are all based on science (physiology, psychology, statistics, & math). Instructor was extremely prepared and knowledgeable.

In 7 years and over 3000 hours of training, this course and Ray Nash were easily the best and most informative course I've had. Highly recommend to all law enforcement (examiners)!

The course was very organized and well-presented. The material was professional, organized, and relevant to my duties of police polygraph.

This course gives the student a stronger sense of confidence and an opportunity to learn new techniques & approaches.

Ray was obviously very knowledgeable in the area of polygraph, the application of polygraph, and interviewing.

Classroom and facilities are great and make for a good learning environment.

The research and preparation was obvious.

Ray Nash is very knowledgeable, well-prepared, and very articulate. He was very capable and effective as an instructor.

I truly enjoyed this course. Ray was very hospitable and made the course fun!

I believe the entire course has been beneficial and extremely helpful. The course location was very comfortable and professional.

Ray has gone above and beyond to ensure his students have not only a great learning experience, but a great overall experience as well!

This type of training is very specific and hard to find at other places.

Excellent job all around!



Sheriff Ray Nash - ret.

A retired police chief and sheriff with over 40 years of law enforcement experience, Ray is the founder and CEO of the Police Dynamics Institute and program director for the Institute of

Police Polygraphy. He has provided training to over 20,000 law enforcement and government leaders on a national and international basis and now specializes in expert witness services,

polygraph administration, training development, and instruction.


Dr. William Burke

Dr. Burke is a leading researcher and pioneer in the field of forensic psychology, especially as it relates to violent sexual offenders, renegade law enforcement officers, and other deviant psychopathologies. He developed many of the international testing protocols for the treatment of sex offenders and identification of violent and deviant behavioral profiles. He formerly served as the staff psychologist for the Dorchester County (SC) Sheriff's Office and stays active in the field of research and mental health treatment of high-risk personality profiles. 

Wayne Porter

Wayne Porter

As a retired criminal profiler with over 40 years experience as a polygraphist, Wayne brings a strong background and depth of understanding regarding deviant sexual behavior to the IPP team. Over the years he has amassed a collection of case studies that participants will find disturbing, but helpful in enhancing their understanding of sexual deviancy and the behavioral clues associated with reoffending activities. Wayne has trained over 15,000 officers in criminal profiling, forensic interviewing, polygraph, and investigative techniques.

Course Number: TPICAC23-2

Dates: Oct 30 - Nov 3, 2023

Location: Institute of Police Polygraphy, Charleston, SC

Tuition: $795 USD

Course Number: TPICAC24-1

Dates: April 15-19, 2024

Location: Institute of Police Polygraphy, Charleston, SC

Tuition: $795 USD