secondary track

What Is the Secondary Track?

The secondary track in the Quadri-Track Zone Comparison Technique contains a Relevant Question paired with a non-current exclusive Probable-Lie Comparison Question. See: Matte (1996).

Professional Standards

The American Polygraph Association Standards of Practice govern the use of polygraph techniques and scoring methods. Only validated techniques with published peer-reviewed research support should be used for diagnostic purposes. The test data analysis method must be approved and applied consistently to ensure reliable and defensible results.

Research Basis

For access to the published research supporting polygraph techniques and scoring methods, visit the polygraph research database. Understanding the empirical foundation of each technique is essential for practitioners, researchers, and those evaluating polygraph evidence.

Context in Modern Practice

In contemporary validated practice, all aspects of the polygraph examination — from question formulation to scoring methodology — are governed by the APA Standards of Practice. These standards ensure that examinations are conducted using validated techniques, that diagnostic opinions are based on structured test data analysis, and that the rights and welfare of examinees are protected throughout the process.