Investigator Tips

General Topics

Investigator’s Response to a Subject’s Challenges During Interviews and Interrogations

Oct 14, 2022

This article is a follow-up to last month’s “Investigator Tip” which discussed how an investigator’s own bearing and demeanor may affect the outcome of an investigative interview or interrogation. This article expands...

Legal Cases Sorted by Category

Sep 01, 2015

On a regular basis over the last 10 years we have published on our website and through our quarterly newsletter legal updates of current cases which address relevant interview and interrogation issues...

The Reid Technique: A Position Paper

May 01, 2015

The Reid Technique: A Position Paper


Core PrinciplesBest PracticesResponses to Criticisms The Courts’ View of False Confession ExpertsThe Courts’ View of the Reid TechniqueThe Best Way to Guard Against False...

The Feasibility of an Analytic Assessment to Identify False Confessions

Nov 01, 2012

The medical, psychiatric and therapy communities have a long history of using diagnostic "checklists" to evaluate the presence or absence of physiological or mental disease or degree of impairment. These analytic assessments...

Investigating Issues of Intent

Jul 01, 2012

Two recent news events have centered around a person's intentions. The first was the shooting of Trayvon Martin by George Zimmerman. The second was a White house correspondent named Neil Munro who...

Research Review: The lie, the Bluff and False Confessions

Jan 01, 2011

One of the most controversial aspects of criminal interrogation involves the use of trickery and deceit. While Federal and State Supreme Courts routinely uphold confessions that were obtained from interrogations during which...

Responding to Defense Experts' Characterization of Interrogation

May 01, 2010

In 1998 David Lykken wrote a book titled, "A Tremor in the Blood: The Uses and Abuses of the Polygraph Technique". In it, he advocated the use of his own "Guilty Knowledge...

The Esteem-Motivated Offender

Jan 01, 2010

It is human nature to seek acclaim and recognition. Given the choice, most people would rather be well known and respected than an obscure outsider who is unimportant and ignored. Typically, this...

Civil Liabilities Associated With False Confessions

Nov 01, 2009

Civil Liabilities Associated With False Confessions

Training in the field of interrogation teaches investigators not only how to conduct effective interrogations, but also the legal aspects of obtaining admissible confessions...

The Role of Motivation in Detection of Deception Research

Jul 01, 2006

Early reports on the accuracy of the polygraph technique were largely anecdotal. For example, if ten suspects were administered a polygraph examination on a particular crime and one of them failed and...

Evaluating the Suspect Who Accepts Some Responsibility for the Crime

Aug 01, 2005

During the course of interviewing a suspect who is guilty of committing a crime it is not uncommon for the suspect to acknowledge some level of responsibility for committing the...

Do You Invite People to Lie to You?

Apr 01, 2005

No one wants people to lie to them. Yet, I have encountered numerous parents, teachers and investigators who regularly invite deceptive answers from people they question. I am certain they do not...

Consideration For an Investigator's Attire

Jan 01, 2005

The very first impression a subject forms of an investigator will be based on physical observations -- not only gender, race and body type, but also attire. The desired perception...

Issues to Consider Regarding Possible Suicidal Suspects

Nov 01, 2004

It was about 4:00 in the afternoon when one of our regular clients called and requested an "emergency" polygraph examination for a 19-year-old female employee they suspected was stealing jewelry from...

Testifying on a Suspect's Behavior Symptoms

Oct 01, 2004

Recently, the Washington Supreme Court reversed a rape conviction partially because the trial court admitted an investigator's testimony that the defendant's verbal and nonverbal behavior symptoms were indicative of guilt...

Neurolinguistic Evaluation

May 01, 2003

Neurolinguistic Evaluation


The outer cortex of the human brain is divided into left and right hemispheres. When performing different activities, one hemisphere dominates over the other. In 80%...

Conducting An Exit Interview

Jun 01, 2002

When an employee gives his two week notice to leave a company, the typical response centers around how to find a replacement for that person. What is often overlooked is that the...

Don't Overlook The Person Who Reported The Crime

Jan 01, 2002

A guideline we teach during our seminars is that the first person interviewed during an investigation should be the individual who reported the crime. The primary reason for this is because that...

Screening New Employees: Part II

Dec 01, 2001

The importance of a face to face interview with a job applicant to evaluate their recent past behavior was emphasized in the last web tip. One reason employers are reluctant to ask...

Screening New Employees: Part I

Nov 01, 2001

Screening New Employees: Part I

In light of the tragic events of September 11th, there is a heightened awareness to properly screen new employees. The terrorist=s attack on the...