Selected Problems in Evaluation of Polygraph Examination Results

Abstract

Standardisation is absolutely essential in methods of polygraph examination because every quality control is based on comparing features of a specific polygraph examination and established polygraph examination standards. In the case of polygraph examination, such a standardisation includes: • the manner of carrying out a pre-test interview with the examinee • the manner of selecting control questions • the choice of control questions • the manner of presenting questions to an examinee • the identifi cation of countermeasures • the measurement and quantifi cation of physiological responses • decision about the confi guration of obtained data. However, the application of standards for an evaluation of polygraph examination results may be connected with limits in obtaining more detailed information or may meet resistance. The objective of this study is to provide examples of such cases. In my study, I use data from observations derived from two of my empirical research projects in polygrapher conclusion accuracy.