GPN Newsroom (Articles)

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

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

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).

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.

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 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 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.

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.

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.

