During the pretest interview
phase the examiner gets to know the subject. Details of the issue will be
discussed at length. A consent and release form will be given to the
examinee to be read and signed, giving their permission to be administered the
polygraph test. All of the test questions will be formulated and
completely reviewed with the subject. The polygraph instrument and all
the attachments will be explained. The most time consuming step of the
polygraph test process is the pretest interview and most polygraphs last
between 1 1/2 to 3 hours from start to finish.
To conduct the actual polygraph examination, the examiner attaches the
components to the examinee. These are painless but it is a stressful
experience. The components consist of:
After the instrument
attachments are placed on the subject, pressure will be added to the blood
pressure cuff and the test begins. The examiner asks a series of
questions that have been previously reviewed. The exam will be repeated
three to six times to provide the appropriate number of charts for scoring.
When the test and collection of polygraph charts is complete, the charts are
carefully analyzed by the examiner and an opinion is rendered. The
opinion of the examiner is based solely on the polygraph charts. An
opinion of DI - Deception Indicated, NDI - No Deception Indicated (truthful) or
Inconclusive / No Opinion
We use the latest computerized polygraph equipment and are available at
numerous offices in the San Diego, Orange, Los Angeles and Riverside counties.