CONFIDENTIAL AND PROFESSIONAL INVESTIGATIONS

Everything You Need to Know Before Your Examination

At Locaters International, Inc., we understand that scheduling a polygraph examination can feel unfamiliar or even intimidating. The questions below are designed to walk you through every aspect of the process — from how the technology works to what to expect on the day of your exam. If you have a question that is not addressed here, call us at (386) 756-6100 and we will be happy to help.

About Polygraph Testing

What is a polygraph test?
A polygraph examination,  commonly referred to as a lie detector test, is a scientifically validated procedure that measures and records a person's physiological responses while they answer a series of structured yes-or-no questions. The instrument simultaneously monitors multiple channels of data, including cardiovascular activity (heart rate and blood pressure), respiratory patterns, and electrodermal activity (skin conductivity). Trained examiners analyze these recordings to assess whether a subject's responses indicate truthfulness or deception.

How does a polygraph work?
The polygraph instrument records involuntary physiological changes that occur when a person experiences the psychological stress associated with deception. When someone provides a deceptive answer, the body's autonomic nervous system produces measurable reactions — changes in breathing, increases in heart rate, and fluctuations in skin conductivity — that are captured in real time by the polygraph sensors. The examiner compares these responses across multiple question types and repetitions to reach a conclusion.

How accurate is a polygraph test?
When conducted by a qualified, certified examiner using approved protocols, polygraph testing achieves accuracy rates of 87–98%. Single-issue examinations — those focused on a specific incident or question — consistently produce accuracy at the higher end of that range. These accuracy figures are supported by research published by the American Polygraph Association (APA) and are based on the same government-grade protocols used by federal law enforcement and intelligence agencies, including the FBI, CIA, NSA, DEA, and U.S. Secret Service.

It is important to note that accuracy is directly tied to examiner qualifications, equipment quality, and proper testing methodology. An inexperienced or unaccredited examiner using outdated methods will produce far less reliable results.

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Is polygraph testing scientifically accepted?
Yes. Polygraph testing using validated psychophysiological detection of deception (PDD) methodology is recognized by the American Polygraph Association, supported by decades of peer-reviewed research, and is the only truth-verification technology accepted for use by U.S. government agencies. Unlike voice stress analysis or other alternative methods, polygraph has a substantial and continually expanding body of scientific evidence supporting its reliability when properly administered.

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What is the difference between a polygraph and voice stress analysis?
Voice stress analysis (VSA) claims to detect deception through changes in the voice. However, it has no credible peer-reviewed research confirming its accuracy and has been repeatedly discredited in independent studies. The American Polygraph Association has compiled links to more than 30 studies,  including a University of Florida study, documenting the lack of validity of voice stress technology. At Locaters International, we use only computerized polygraph instrumentation with validated, evidence-based methodology.

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The Examination Process

What happens during a polygraph examination?
A standard polygraph appointment consists of three phases:

Pre-Test Interview (approximately 30 minutes): Your examiner will introduce themselves, explain the process, review your rights, discuss the reason for the examination, and agree upon the specific test questions with you in advance. You will know exactly what will be asked before the examination begins.

 

In-Test Phase (approximately 60 minutes): The polygraph sensors are attached, and the examination is administered. Each question is asked and answered multiple times to ensure consistent, accurate data collection. The process is non-invasive and painless.

Post-Test Review: The examiner analyzes the data collected and, where appropriate, may ask follow-up questions based on the results.

 

How long does a polygraph examination take?
The full appointment typically takes approximately two hours from start to finish, including the pre-test interview, the examination itself, and any post-test discussion.

 

How many questions can be asked?
A standard single-issue polygraph examination is focused on three to four carefully worded yes-or-no questions, agreed upon in advance between you and the examiner. Limiting the number of questions is not a restriction — it is a requirement of proper methodology. Focused, single-issue examinations produce the most reliable and defensible results. Examinations attempting to cover too many issues simultaneously are less accurate and less credible.

Who determines the questions?
The specific test questions are agreed upon during the pre-test interview between you and the examiner. The questions must be clear, unambiguous, answerable with a simple yes or no, and relevant to the specific issue being examined. You will review and approve all questions before the examination begins.

Is the test painful or physically uncomfortable?
No. The polygraph uses simple, non-invasive sensors attached to the fingers, chest, and abdomen. There are no needles, no electrical stimulation, and no discomfort. Most clients report that the physical experience of being connected to the instrument is no more uncomfortable than wearing a blood pressure cuff.

 

Can I stop the examination if I want to?
Yes. You have the right to stop the examination at any time and for any reason. Participation in a private polygraph examination is voluntary, and no one can compel you to continue against your will.

 

Preparing for Your Examination
 

How should I prepare for a polygraph test?
The following guidelines will help ensure your examination produces the most accurate results:

• Get a full night of sleep the evening before your appointment

• Eat a normal meal before arriving — do not fast or skip meals

• Avoid excessive caffeine on the day of the examination

• Arrive on time and allow yourself to feel settled before the exam begins

• Be honest during the pre-test interview — the examiner is there to help you, not judge you

• Ask questions if anything is unclear — your examiner wants you to feel comfortable and informed
   

Should I tell my examiner about any medications I take?

Yes, absolutely. Disclose all prescription and over-the-counter medications to your examiner during the pre-test interview. Certain medications can affect physiological responses, and your examiner needs this information to properly interpret your results. This information is confidential.

 

Will anxiety affect my results?
General nervousness does not cause a failed result. The polygraph is designed to measure the difference in physiological responses between truthful and deceptive answers — not baseline anxiety. Everyone experiences some degree of nervousness before and during an examination, and the testing methodology accounts for this. Your examiner will conduct a thorough pre-test interview specifically to help reduce anxiety and ensure you are comfortable before the examination begins.

 

Can someone "beat" a polygraph test?
Attempts to manipulate polygraph results through countermeasures — such as controlled breathing, biting the tongue, or mental techniques — are well documented, and certified examiners are specifically trained to detect them. Modern computerized polygraph instruments and validated scoring methods make successful countermeasures extremely difficult. Any attempt to manipulate the examination may itself produce results that are flagged by the examiner.

 

What should I avoid before my examination?

Do not consume excessive alcohol in the 24 hours prior to your appointment

Do not take sedatives or anti-anxiety medications not already prescribed to you

Do not attempt to research "how to beat" a polygraph test

Do not arrive exhausted or under extreme physical stress if it can be avoided

 

Results & Reporting
 

How are results determined?
Your examiner analyzes the physiological data collected during the examination using validated numerical scoring methods. Results are classified as one of three outcomes: No Deception Indicated (NDI), Deception Indicated (DI), or Inconclusive. An inconclusive result means the data collected was insufficient to reach a definitive conclusion — it is not a failed test.

 

What is an inconclusive result?
An inconclusive result occurs when the physiological data does not clearly support either a truthful or deceptive conclusion. This can happen for a variety of reasons, including physical illness, extreme fatigue, or an inability to remain still during the examination. In some cases, a follow-up examination may be recommended.

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When will I receive my results?
Your examiner will typically be able to discuss preliminary findings with you at the conclusion of your appointment. A fully detailed written report will be prepared and delivered to you within 24–48 hours.

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What does the written report include?

Your written report will include a description of the examination methodology, the specific questions asked, a summary of the physiological data collected, the examiner's conclusions, and the examiner's credentials and certification information. The report is professionally prepared and suitable for use in personal, legal, or professional settings.

 

Who receives a copy of my results?
Your results are provided only to you. No results, recordings, or reports are shared with any third party without your explicit written authorization. This applies regardless of who requested or paid for the examination.

 

Legal & Admissibility Questions

Are polygraph results admissible in Florida courts?
In Florida, polygraph results may be admissible in court by stipulation — meaning both the prosecution and defense (or both parties in a civil matter) must agree in advance to accept the results as evidence. Without a prior stipulation agreement, polygraph results are generally not admissible as standalone evidence. However, polygraph results are routinely used by attorneys to support negotiations, inform legal strategy, and provide leverage in pre-trial proceedings. We recommend consulting with your attorney regarding the best way to use polygraph results in your specific legal situation.

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Can a polygraph be used to help clear my name in a legal matter?
Yes, and this is one of the most common reasons clients seek our services. A professionally administered and documented polygraph examination can provide meaningful support for your defense — whether in criminal matters, civil disputes, custody proceedings, or employment-related allegations. Many attorneys use polygraph results as a tool to negotiate with prosecutors, support motions, or demonstrate client credibility to the opposing party.

 

What is the Employee Polygraph Protection Act (EPPA), and does it apply to my situation?
The Employee Polygraph Protection Act (EPPA), enacted in 1988, prohibits most private-sector employers from requiring or requesting that current or prospective employees submit to polygraph testing. However, the law includes important exemptions for certain industries and specific circumstances, including:

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• Government employers at all levels (federal, state, and local) are not subject to EPPA

• Security service companies protecting critical infrastructure

• Controlled substance manufacturers and distributors

• Employers conducting active investigations of specific economic losses (theft, embezzlement, sabotage) involving employees who had access to the loss

• Even in permitted circumstances, strict procedural requirements must be followed. Locaters International has extensive experience navigating EPPA compliance and can advise you on whether testing is permissible in your specific situation.

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Can polygraph results be used in family court or custody proceedings?
Yes, with the agreement of all parties involved. Polygraph results can be a meaningful tool in family law and custody matters — particularly where credibility is at issue and objective evidence is needed. Our examiner handles these sensitive matters with the utmost care and professionalism. We recommend coordinating with your family law attorney before scheduling an examination for use in a legal proceeding.

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Qualifications & Credentials
 

What qualifications should I look for in a polygraph examiner?
A legitimate, qualified polygraph examiner should:

• Have graduated from an APA-accredited polygraph training program

• Hold current certification from the American Polygraph Association or equivalent accrediting body

• Use a computerized polygraph instrument — not voice stress or other alternative technologies

• Carry professional liability insurance

• Provide a detailed written report with every examination

• Hold any required state license (Florida does not require polygraph examiners to be licensed)

• Adhere to a professional code of ethics and standards of practice

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Is your examiner licensed in Florida?
Yes. Locaters International, Inc. holds Florida Private Investigation Agency License A-0000919, and our examiner meets all applicable state and professional licensing requirements. Our examiner is also a member of the Florida Polygraph Association and adheres to APA standards of practice and ethics.

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How do I know I am not being misled by an unqualified provider?
Ask directly,  and expect a clear, verifiable answer. Request the examiner's APA certification number, ask what training program they attended, confirm they use a computerized instrument (not voice stress), and ask to see a sample report before booking. A qualified examiner will welcome these questions. If a provider is vague, evasive, or cannot confirm their credentials, look elsewhere.

 

Confidentiality & Privacy

Is everything I share confidential?
Yes. All communications with our office, all information shared during the pre-test interview, and all examination results are held in strict confidence. We do not share any information with third parties without your explicit written authorization.

 

Who can be present during the examination?
Only the examiner and the person being examined may be present during the in-test phase of the examination. This is a requirement of proper testing methodology and ensures the integrity of the results, as well as the comfort and privacy of the examinee.

 

Is my appointment confidential?
Yes. All examinations are conducted at our private South Daytona office by appointment only. There are no waiting rooms shared with other clients, and our scheduling process is designed to protect your privacy from start to finish.

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Pricing & Scheduling
 

How much does a polygraph examination cost?
Pricing varies depending on the type of examination, the number of examinees, and the nature of the matter being investigated. Please contact us directly at (386) 756-6100 or info@bestpi.com for specific pricing information. All examinations include the pre-test interview, the examination, and a fully detailed written report — there are no hidden fees.

 

Do you offer couples or multi-person testing?
Yes. We offer examinations for couples and situations involving multiple examinees, such as workplace investigations. Each person is examined individually and privately. Please contact us to discuss scheduling and pricing for multi-person examinations.

 

How do I schedule an appointment?
Call us at (386) 756-6100 or email info@bestpi.com. We will discuss your situation, recommend the appropriate type of examination, and schedule your appointment at a time that is convenient for you. All examinations are by appointment only.

 

What areas do you serve?
Our office is located in South Daytona, Florida, and we primarily serve Volusia County and the surrounding areas — including Daytona Beach, Port Orange, Ormond Beach, DeLand, Palm Coast, New Smyrna Beach, and Deltona. We also work with attorneys and clients on matters requiring coordination beyond the immediate area. Contact us to discuss your specific needs.

 

Still Have Questions?
We are here to help. Whether you are ready to schedule an examination or simply need more information to decide if polygraph testing is right for your situation, our team is available to speak with you confidentially.

 

Call: (386) 756-6100
Email: info@bestpi.com
2435 S. Ridgewood Avenue, South Daytona, FL 32119

Serving Daytona Beach, Port Orange, Ormond Beach, DeLand, New Smyrna Beach, Palm Coast, Deltona, and greater Volusia County.