The Polygraph Process

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Polygraph Process

A typical polygraph examination will include a period referred to as a:

  • pre-test interview,
  • a chart collection phase and a
  • test data analysis phase.

During the pre-test, the polygraph examiner will complete required paperwork and talk with the examinee about the test, answering any questions the examinee might have. It is during this phase that the examiner will in detail discuss the test questions and familiarize the examinee with the testing procedure. The questions that are asked are discussed before the actual testing begins and it is during this phase that the examiner will make sure that the examinee fully understands all questions.

During the chart collection phase the examiner will administer and collect a number of polygraph charts. The number of questions and the number of charts will vary, depending on the number of issues and technique employed.

Following this, the examiner will analyze the charts and render an opinion as to the truthfulness of the examinee.

The examiner, when appropriate, will offer the examinee an opportunity to explain physiological responses in relation to one or more questions presented during the test.