Forensic psychophysiology · Dallas · Wisconsin · United Kingdom
When agencies need to depend on the truth, they turn to Behavioral Measures.
Lie detector tests and polygraph examinations in Dallas, Texas
01 — 06
Practice areas
Examinations are conducted from our Dallas office, our Midwest office in Wisconsin, and our training centre in Newcastle upon Tyne, England.
01
Pre-employment screening
Applicant verification for federal, state, and municipal agencies, and for employers operating under an exemption.
02
Criminal defense
Specific-issue examinations for defense counsel and district attorney offices, before charging or plea.
03
Post-conviction
Maintenance and monitoring examinations for probation departments, treatment providers, and supervising officers.
04
Fidelity testing
Private relationship examinations, handled discreetly and without judgment, for individuals and couples.
05
Workplace and EPPA
Exemption review and investigation testing under the Employee Polygraph Protection Act, documented correctly.
06
Examiner training
Accredited curriculum for new and working examiners, plus program audits for agencies that need defensible procedure.
Not sure which applies to your situation? Call (972) 437-4597 and we will tell you plainly, including when a polygraph is the wrong tool for it.
The standard
Validated technique, numerical scoring
We use published, peer-reviewed question formats and score every chart numerically. Nothing we do relies on a technique that would not survive cross-examination.
Examiners who testify
Our examiners have given expert testimony in state and federal proceedings and trained examiners for agencies internationally. Read their backgrounds.
Honest about the limits
A polygraph is a strong tool, not a magic one. We will tell you when an examination is the wrong fit, even when saying so costs us the appointment.
The appointment
What happens during your polygraph examination
Most people have never taken a polygraph, and the uncertainty is the hardest part of the day. Here is the whole appointment, start to finish. Plan on two to three hours.
01 · Pre-test
The interview
The examiner reviews the issue with you, explains the instrument, and writes the questions together with you. Nothing on the test will be a surprise. You see every question before any data is recorded.
02 · Collection
The charts
Pneumo · Cardio · EDA
Sensors record respiration, cardiovascular activity, and electrodermal response while the agreed questions are asked in sequence. The instrument measures physiology only. Unlike voice stress analyzers, a polygraph does not assess the voice.
03 · Analysis
The opinion
Your examiner scores the charts numerically and issues a written opinion, usually the same day. Read about accuracy and error rates.
Michael was very friendly, respectful and straightforward. The process was very well done from check-in to the testing. You could tell he was a well seasoned pro. For my first time having a polygraph done he made me feel as much at ease as possible and was very transparent about the process.
Danyelle Shankman
He is respected and trusted by prosecutors, defense attorneys and judges alike. I am very grateful for his honesty, expertise and professionalism.
Al Gilbertson — Criminal defense attorney, 35 years in Dallas
Clients
The people who depend on us
Law enforcement agencies
Federal, state, and local agencies use polygraph examinations to corroborate statements, focus investigations, and screen applicants. We build around your existing procedures rather than forcing you into ours.
The legal community
Defense attorneys, U.S. Attorney offices, and district attorney offices test accounts early, while the information can still change the outcome. We are used to working under privilege and to deadline.
Employers and private clients
Businesses operating under an EPPA exemption, and individuals with a personal matter to resolve, get the same standard of care as our agency clients. Scheduling is flexible and everything stays confidential.
Behavioral Measures & Forensic Services is a polygraph and forensic psychophysiology practice. We do not provide forensic engineering, construction schedule analysis, digital or video forensics, or security and vulnerability assessments.
Before you book
Questions we hear before every lie detector test
How much does a lie detector test cost in Dallas?
Pricing depends on the examination type and how many issues need covering. A single-issue exam is quoted as one flat fee covering the pre-test interview, chart collection, scoring, and a written report. Call (972) 437-4597 for a firm quote before you book. There is no charge for the initial conversation.
How accurate is a polygraph examination?
Accuracy depends on the technique used, the quality of the question construction, and the skill of the examiner. Validated single-issue techniques scored numerically perform substantially better than screening formats covering many topics at once. We explain the specific research for your exam type during the pre-test. See our full discussion of polygraph errors.
Are polygraph results admissible in Texas courts?
Generally, no. Texas courts do not admit polygraph results as evidence unless both parties stipulate to admission in advance. Results are used constantly outside the courtroom, however: in charging decisions, plea negotiations, probation compliance, internal investigations, and case strategy. Your attorney can advise on how a result would be used in your matter.
How long does an appointment take?
Plan on two to three hours. The pre-test interview is the longest part, because question construction is where accuracy is won or lost. Rushing that stage is the most common cause of an inconclusive result.
Can my employer require me to take a polygraph?
In most cases, no. The federal Employee Polygraph Protection Act prohibits the majority of private employers from requiring, requesting, or suggesting a polygraph. Narrow exemptions exist, including certain security service firms, pharmaceutical handlers, and ongoing investigations into specific workplace losses. Government employers are treated differently. Call us and we will walk you through where your situation falls.
Where can I find a polygraph test near me in Dallas–Fort Worth?
Our Southwest office is at 1720 Regal Row, Dallas, TX 75235, minutes from Dallas Love Field and convenient to Irving, Garland, Richardson, Arlington, and Fort Worth. Appointments are typically available within a few business days. Get directions and request a time.
Do you provide digital, video, or engineering forensics?
No. Our forensic work is limited to polygraph examination and forensic psychophysiology. We do not perform digital forensics, video or image analysis, forensic engineering, construction schedule analysis, or security and vulnerability assessments.
Three offices, one standard
Southwest
1720 Regal Row
Dallas, TX 75235
(972) 437-4597
Midwest
Serving Wisconsin and the
surrounding Midwest
(262) 521-3318
Polygraph Training Centre
Newcastle upon Tyne
England
(972) 437-4597
When you need to depend on the truth
Tell us what you need to resolve and we will tell you honestly whether a polygraph is the right tool for it. Call to schedule a lie detector test in Dallas, or send the details and we will respond the same business day.