How long does a Polygraph Examination last?
Examinations last about 2 hours. However, depending on the complexity of the case, including background information, paperwork, and chart evaluation, some can last up to 2 1/2 or 3 hours. I always ask that the person taking the Polygraph Examination block out at least 3 hours so that there are no scheduling issues.

If I am nervous, will I fail my Polygraph Examination?
Everyone taking a Polygraph Examination is nervous. Whether it is a Pre-Employment Screening Examination, an Examination regarding a relationship, or an Examination concerning a criminal act, everyone who takes a Polygraph Examination is nervous. The research into the Polygraph Examination has taken all of this into account. There are certain steps I take to look for the "norm" of the person taking the Polygraph Examination. I also conduct an acquaintance test to familiarize each person taking a Polygraph Examination with the procedures and how the components feel when attached.

Are Polygraph Examinations admissible in court?
In a short answer, YES.  But the long answer states that both parties, the prosecution and defense, have to agree beforehand whether it will be admissible.  This agreement is called a stipulation. 

Who uses Polygraph Examination?
Polygraph Examinations are used by federal, state, and local law enforcement agencies, US and district attorneys, public defenders, lawyers, private individuals, and parole and probation departments worldwide.  Private and public companies also use Polygraph Examinations when authorized under the Employee Polygraph Protection Act of 1988 (EPPA) regarding thefts.