Polygraph & Lie Detection · No. 11
Polygraph & Lie Detection in New York City
Certified polygraph examinations and voice stress analysis administered by qualified examiners under controlled conditions.
Certified polygraph examinations and voice stress analysis administered by qualified examiners under controlled conditions.
Polygraph testing is a useful investigative tool in specific situations. Workplace investigations where someone is suspected of theft or misconduct, personal relationships where one party wants to show honesty, and pre employment screening for certain high trust positions. It's not admissible in most New York courts, but it has real value as an investigative tool when used correctly.
Polygraph examinations measure physiological responses during questioning. A properly administered exam by a credentialed examiner can be a useful tool in narrow investigative situations, but it's not a magic truth detector, and the courts in New York generally don't admit polygraph evidence at trial. We're upfront with every client about exactly what a polygraph can set up and what it can't.
Subject to the federal Employee Polygraph Protection Act and New York labor law, polygraphs have limited but real uses in workplace investigations. Especially for follow up after specific incidents like theft, with employee consent and proper procedure.
Some clients use polygraph testing in personal relationships. Typically a partner who wants to show truthfulness about a specific question. These are voluntary and the use cases are limited, but we administer them when both parties consent.
VSA is a different technology and is also offered. The science behind it is more contested than polygraph. We use it in specific situations where polygraph isn't feasible.
A polygraph examination is a flat fee per exam, set before the test, so you know the cost up front.
The main things that move the fee:
A single issue polygraph examination in New York typically runs a few hundred dollars; multi issue or on site exams cost more. Every case is quoted individually. The initial consultation with David is free and confidential, and you’ll get a written estimate before any work begins, with no obligation.
Straight answers to what clients ask most. If yours isn't here, call David directly for a free, confidential consultation.
To assess truthfulness on specific factual questions. Fidelity, theft, abuse allegations, pre employment integrity, or a single disputed event. It is used by people, couples, employers, and attorneys to get clarity when accounts conflict.
Generally no. Polygraph results are not admissible as evidence in New York courts. Their value is investigative and personal: resolving a private dispute, guiding a decision, or supplementing other evidence. We are upfront about that so you know what the test can and cannot do for you.
When administered by a trained, experienced examiner using a properly structured exam, polygraph is a well regarded tool, though no test is infallible. Accuracy depends heavily on the examiner and the question design, which is why who conducts the test matters.
A pre test interview establishes the questions and baseline, the examiner records physiological responses while asking a small set of agreed, relevant questions, and then analyzes the results. The whole process is calm, controlled, and explained to you beforehand.
Yes. Relationship and infidelity exams are a common request. It is a sensitive process, handled professionally and confidentially. We will talk through whether testing is the right step for your situation before scheduling anything.
A polygraph examination is a flat fee set before the test. A single issue exam in New York typically runs a few hundred dollars; multi issue or on site exams cost more. The fee is confirmed in advance when you book.
New to working with an investigator? See how we work, our confidentiality standards, or why a licensed PI matters.
From the field: What a polygraph can and cannot tell you · Voice stress analysis: how it works.
New York Intelligence Agency works across all five boroughs and the surrounding metro. Understanding the population we serve. Its scale, density, and makeup. Informs how we plan surveillance, locate people, and build cases in the city.
Source: U.S. Census Bureau, American Community Survey (New York City).