2026

Comparative Study

A Comparative Study Of Polygraph Testing In The UK And US 

The United States and the United Kingdom are the two biggest users of polygraphs worldwide. The US alone conducts some 500,000 – 2.5 million lie detector tests annually. And while UK figures pale in comparison to that, the country reportedly

A Comparative Study Of Polygraph Testing In The UK And US  Read More »

The United States and the United Kingdom are the two biggest users of polygraphs worldwide. The US alone conducts some 500,000 – 2.5 million lie detector tests annually. And while UK figures pale in comparison to that, the country reportedly

polygraph exams

The Importance of Polygraph Exams in Drug-Free Bodybuilding Competitions 

Doping is a nagging concern in professional bodybuilding competitions. Despite proactive efforts by many federations, hardly a month goes by without reports of acclaimed bodybuilders testing positive for performance-enhancing drugs (PEDs). Track-and-field

The Importance of Polygraph Exams in Drug-Free Bodybuilding Competitions  Read More »

Doping is a nagging concern in professional bodybuilding competitions. Despite proactive efforts by many federations, hardly a month goes by without reports of acclaimed bodybuilders testing positive for performance-enhancing drugs (PEDs). Track-and-field

brain myth

The 10% Brain Myth and Its Relevance to Lie Detector Testing  

The human brain is the primary organ involved in truth suppression. While polygraphs don’t directly measure an examinee’s mindset, all tracked parameters are regulated by the brain and central nervous system (CNS).  Therefore, it’s unsurprising that many misconceptions 

The 10% Brain Myth and Its Relevance to Lie Detector Testing   Read More »

The human brain is the primary organ involved in truth suppression. While polygraphs don’t directly measure an examinee’s mindset, all tracked parameters are regulated by the brain and central nervous system (CNS).  Therefore, it’s unsurprising that many misconceptions 

polygraph

How the Breadboard Polygraph Laid the Groundwork for Modern Testing 

John A. Larson is widely credited for inventing the modern polygraph machine. While many inventors preceded and succeeded him, Larson’s efforts laid the groundwork for the lie detector equipment as we know it today. Larson is perhaps best known

How the Breadboard Polygraph Laid the Groundwork for Modern Testing  Read More »

John A. Larson is widely credited for inventing the modern polygraph machine. While many inventors preceded and succeeded him, Larson’s efforts laid the groundwork for the lie detector equipment as we know it today. Larson is perhaps best known

Understanding Examiner Decision

Understanding Examiner Decision Thresholds: When Data Is Sufficient – and When It Is Not 

Polygraph evaluation is a rigorous process that requires a detailed, methodological approach. To make accurate inferences, examiners must carefully analyze the physiological data collected by the lie detector machine.  

Understanding Examiner Decision Thresholds: When Data Is Sufficient – and When It Is Not  Read More »

Polygraph evaluation is a rigorous process that requires a detailed, methodological approach. To make accurate inferences, examiners must carefully analyze the physiological data collected by the lie detector machine.  

data sufficiency

How Examiners Evaluate Data Sufficiency Before Reaching Polygraph Conclusion? 

Polygraph examination is a rigorous process that often culminates in careful data analysis.

Before inferring deception, examiners must determine whether the information collected is sufficient to enable accurate interpretation of the lie detector test findings.

How Examiners Evaluate Data Sufficiency Before Reaching Polygraph Conclusion?  Read More »

Polygraph examination is a rigorous process that often culminates in careful data analysis.

Before inferring deception, examiners must determine whether the information collected is sufficient to enable accurate interpretation of the lie detector test findings.

Polygraph Examiners

How Polygraph Examiners Determine Appropriate Test Format For Each Case? 

When it comes to polygraph exams, there’s no one-size-fits-all strategy. Each lie detector test requires a unique approach. To conduct a credible polygraph evaluation, examiners must follow certain industry-stipulated guidelines. The question design rules typically apply across the board.

How Polygraph Examiners Determine Appropriate Test Format For Each Case?  Read More »

When it comes to polygraph exams, there’s no one-size-fits-all strategy. Each lie detector test requires a unique approach. To conduct a credible polygraph evaluation, examiners must follow certain industry-stipulated guidelines. The question design rules typically apply across the board.

Polygraph Data

How Polygraph Data Is Stored, Secured, And Used: Privacy Standards Every Client Should Know 

Many clients have been there!  
You enlist the services of a certified polygraph examiner. The polygrapher goes ahead to conduct a rigorous lie detector test, taking extreme caution to comply with the industry standards.

How Polygraph Data Is Stored, Secured, And Used: Privacy Standards Every Client Should Know  Read More »

Many clients have been there!  
You enlist the services of a certified polygraph examiner. The polygrapher goes ahead to conduct a rigorous lie detector test, taking extreme caution to comply with the industry standards.

Polygraph Tests Prevent Wrongful Accusations

When Polygraph Tests Prevent Wrongful Accusations: Real-World Scenarios And Lessons 

There is hardly a worse feeling than to have to contend with the accusation of an action you did not commit. Whether the accusation is made at the workplace, in a family, or in a court of law, the harm may have been done way before the truth is known.

When Polygraph Tests Prevent Wrongful Accusations: Real-World Scenarios And Lessons  Read More »

There is hardly a worse feeling than to have to contend with the accusation of an action you did not commit. Whether the accusation is made at the workplace, in a family, or in a court of law, the harm may have been done way before the truth is known.

Mechanics of Pneumographs

Mechanics of Pneumographs: How Breathing Patterns Influence Polygraph Data

Pneumographs are an essential polygraph accessory, working alongside other attachments to collect vital physiological data during lie detector tests. Understanding their mechanics is critical in conducting a credible polygraph exam.

Mechanics of Pneumographs: How Breathing Patterns Influence Polygraph Data Read More »

Pneumographs are an essential polygraph accessory, working alongside other attachments to collect vital physiological data during lie detector tests. Understanding their mechanics is critical in conducting a credible polygraph exam.

GLOBAL POLYGRAPH NETWORK®

Established in 1987, Global Polygraph Network® is the world’s largest and most trusted provider of polygraph services, with lie detector testing available worldwide at over 500 locations by highly-trained experts. Avoid “discount” polygraph frauds and “over the phone” testing scams. We only provide real polygraphs by real examiners. Trust our A+ BBB rating, up-front pricing, and a written guarantee.