Lie Detector/Polygraph Examination Services

A polygraph (commonly referred to as a lie detector) is an instrument that measures and records several physiological responses such as blood pressure, pulse, respiration and skin conductivity while the subject is asked and answers a series of questions, on the basis that false answers will produce distinctive measurements. The polygraph measures physiological changes caused by the sympathetic nervous system during questioning. Within the Federal Government, a polygraph examination is also referred to as a psycho physiological detection of deception (PDD) examination. Several other technologies are also used in the field of lie detection, but the polygraph is the most famous.

When the truth is essential, EPIS will deliver.

The polygraph test is the worldwide standard in determining if an individual is being honest.

Our polygraphists have the certification, experience, and training to conduct court admissible polygraph examinations. Information is verified based on analog and digital testing in connection with interviews and questioning.

Polygraph equipment notes physical changes that indicate that a subject is being dishonest. At the conclusion of a polygraph, examination this information is used to determine a professional opinion based on this concrete evidence.

Polygraph examinations are available for the following situations and are conducted in full compliance with the Employee Polygraph Protection Act:

  1. Employee Theft.
  2. Law Enforcement and Government Internal Investigations.
  3. Pre-Employment Screening.
  4. Criminal Investigations.
  5. Civil Investigations.
  6. Sexual Harassment.
  7. Drug Usage Accusations.
  8. Domestic Investigations.

What is involved in taking a polygraph examination?

A polygraph examination usually takes between 2-3 hours beginning to end and consists of three different phases - pre-test interview, collection of charts and analysis of charts.

Testing Procedure

There are two types of instrumentation, analog and computerized. With EPIS, we use computerized instrumentation.

A typical polygraph test starts with a pre-test interview to gain some preliminary information which will later be used for Control Questions. Then our agent will explain how the polygraph is supposed to work, emphasizing that it can detect lies and that it is important to answer truthfully. Then a "stim test" is often conducted: the subject is asked to deliberately lie and then the tester reports that he was able to detect this lie. Then the actual test starts. Some of the questions asked are irrelevant, others are probable-lie Control Questions that most people will lie about and the remainder are the "Relevant Questions ", that the agent / private investigator is really interested in. The different types of questions alternate. The test is passed if the physiological responses during the probable-lie control questions are larger than those during the relevant questions. If this is not the case, the tester attempts to elicit admissions during a post-test interview, for example, "Your situation will only get worse if we don't clear this up.

Pre-test interview

During the pre test interview the examiner will explain how the polygraph works, discuss the issue, develop, and review all questions to be asked on the polygraph test. This stage is normally the longest to complete and will take anywhere between 45-90 minutes.

Collection of Charts - During this phase the subject will be attached to the polygraph. The question set which was developed during the pre-test interview will be asked three or 4 times.

Analysis of Charts

Once the examiner has collected the charts he will analyzes the results before giving a decision as to the subject's truthfulness or deception.

The specialized nature of polygraph means that only a few companies exist in USA, which can offer this service.

Admissibility of Polygraph Examination

In 2007, polygraph testimony was admitted by stipulation in 19 states, and was subject to the discretion of the trial judge in federal court. The use of polygraph in court testimony remains controversial, although it is used extensively in post-conviction supervision, particularly of sex offenders. In Daubert v. Merrell Dow Pharmaceuticals (1993), the old Frye standard was lifted and all forensic evidence, including polygraph, had to meet a new standard in which "underlying reasoning or methodology is scientifically valid and properly can be applied to the facts at issue." While polygraph tests are commonly used in police investigations in the US, no defendant or witness can be forced to undergo the test. In United States v. Scheffer (1998), the U.S. Supreme Court left it up to individual jurisdictions whether polygraph results could be admitted as evidence in court cases. Nevertheless, it is used extensively by prosecutors, defense attorneys, and law enforcement agencies who believe in its utility. In the States of Massachusetts and Maryland, it is illegal for any employer to order a polygraph either as conditions to gain employment, or if an employee has been suspected of wrongdoing. The Employee Polygraph Protection Act of 1988 (EPPA) generally prevents employers from using lie detector tests, either for pre-employment screening or during the course of employment, with certain exemptions.

In the United States, the State of New Mexico admits polygraph testing in front of juries under certain circumstances. In many other states, polygraph examiners are permitted to testify in front of judges in various types of hearings (Motion to Revoke Probation, Motion to Adjudicate Guilt).

In 2007, in Ohio v. Sharma, an Ohio trial court overruled the objections of a prosecutor and allowed a polygraph examiner to testify regarding a specific issue criminal examination. The court took the position that the prosecutors regularly used polygraph examiner to conduct criminal tests against defendants, but only objected to the examiner's testimony when the results contradicted what they hoped to achieve. Dr. Louis Rovner, a polygraph expert from California, tested the defendant and testified as an expert witness both at a pretrial admissibility hearing and at trial. The defendant, who had been charged with sexual battery, was acquitted.

Your call is strictly confidential and our toll free nationwide number 888.404.EPIS facsimile: 888.329.EPIS or e-mail us at info@epis.us

Client Reviews

Empire Pacific Investigative Services

4.8

Based on 88 reviews

Kim J.
My Son found Mike at Empire Pacific because we needed a detective in order to find someone. We had spend a lot of time and money on many search people websites and never found anything current on the person we were trying to find. We hired Mike to do an initial check to find the person. Mike called and said on the initial check that he had found what we needed, he said the second step would be to go look by foot and there would be a fee per hour. About 2 hours later Mike called and told us he had found the person and gave me his current phone number. I called and sure enough it was the person I was looking for. Now this shows how honest Mike is because he could have easily billed me for a few extra hours of leg work (which is paid per the hour) and I would not have known he already found the person. Mike was very attentive when I called and either picked up his phone or called me back very fast. I would highly recommend Mike, he is vey good at what he does and is respectful, honest and FAST!
Agustin C.
Mike Hakimi from EPIS is a true professional. He helped me with my case. He delivers effectively and fast! I was trying to find someone that nobody has heard from him from since the late 90's, I was very unsure he was still around. I needed to find him and interview him for my movie project. A key character. And Mike incredibly found him. Don't hesitate hiring Mike for any type of service.
Shera C.
Very pleased with Mike and his staff. Thank you for handling this surveillance case on such short notice. I was very pleased with your services and will do biz again with you for sure. I will be in touch:) 5 Stars!!!
Lance R.
Mike and his team are as professional as it gets. Very prompt to reply and understand the finesse needed in this service. I appreciate his expert feedback and how to best proceed in the most efficient way possible. Thank you again!!!

-LRR
Yossi S.
I have highest, highest praise for Mike at Empire Pacific Investigative Services. I had to take someone to court and I was concerned whether sheriff is efficient enough to do the serving or they will just attempt and I pay for nothing. I talked to Mike about serving this particular person and on top of it I try to force future steps of collection and Mike was extremely helpful to show me in and outs of all the options that I have and how he can help me.

My concern was the person that I am suing would play hide and seek, not available during the day and difficult to catch. Sure enough Mike served the paper within 2 to 3 days and informed me accordingly.

I am so happy to know Mike and would not hesitate to recommend him to anyone that has needs for his services.
Kevin O.
I was searching for a family relative, for over 40+ years with no such luck. So I decided to find a private investigator. I contacted Mike at Empire Pacific Investigative Services and in the same day he found the person I was looking for easily. I was so blown away! This service is AAA+ and I would definitely use them again, again and again! Thank you Mike!
Deborah O.
Top notch experience with Empire and Mike!
No lag time or waiting around. He gave me the difficult diligence I needed within the week.
Professional, friendly and available whenever I need the.
Prompt response time and easy to reach!
Thanks Mike! I'll be using your services again. Wouldn't go to anyone else!

Deb Olberding
Magda S.
I had very good experience with Empire Pacific Investigative Services, Mike was very determined and efficient, detail oriented and reliable. His work effect exceeded my expectations.
Yossi S. Los Angeles, CAV
0 friends
4 reviews

11/20/2017

I have highest, highest praise for Mike at Empire Pacific Investigative Services. I had to take someone to court and I was concerned whether sheriff is efficient enough to do the serving or they will just attempt and I pay for nothing. I talked to Mike about serving this particular person and on top of it I try to force future steps of collection and Mike was extremely helpful...

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Agustin C. Los Angeles, CA
10 friends
3 reviews

4/26/2018

Mike Hakimi from EPIS is a true prfessional. He helped me with my case. He delivers effectively and fast! I was trying to find someone that nobody has heard from him from since the late 90's, I was very unsure he was still around. I needed to find him and interview him for my movie project. A key character. And Mike incredibly found him. Don't hesitate hireing...

read more…
Marcus B. Ewa Beach, HI
32 friends
86 reviews

2/27/2018

I contacted Mike at Empire to do some research for me on an old insurance claim. It ended up not being along the lines of work that he was an expert in but what was so great about the experience was that Mike went out of his way to find me someone that did specialize in the area. If you are considering a couple options on who you need for your investigation you...

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Magda S. New York, NY
27 friends
2 reviews

3/21/2018

I had very good experience with Empire Pacific Investigative Services, Mike was very determined and efficient, detail oriented and reliable. His work effect exceeded my expectations.

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Shera C. Orange, CA
8 friends
24 reviews

2/27/2018

Mike's firm is awesome. I gave them short notice to conduct surveillance and they totally delivered. Thank you and your staff for handling this assignment for me on such short notice...

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Jonatan C. Chatsworth, Los Angeles, CA
0 friends
8 reviews

8/25/2017

I have worked with a few private investigation firms, and in my opinion, Empire Pacific Investigative "Mike Hakimi" is the best one...

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