skip navigation

PUBLICATIONS

Register for Latest Research

Stay Informed
Register with NCJRS to receive NCJRS's biweekly e-newsletter JUSTINFO and additional periodic emails from NCJRS and the NCJRS federal sponsors that highlight the latest research published or sponsored by the Office of Justice Programs.

NCJRS Abstract

The document referenced below is part of the NCJRS Virtual Library collection. To conduct further searches of the collection, visit the Virtual Library. See the Obtain Documents page for direction on how to access resources online, via mail, through interlibrary loans, or in a local library.

 

NCJ Number: 148968 Find in a Library
Title: Is the Guilty Knowledge Polygraph Technique Applicable in Criminal Investigations? A Review of FBI Case Records
Journal: Polygraph  Volume:23  Issue:1  Dated:(1994)  Pages:85-94
Author(s): J A Podlesny
Date Published: 1994
Page Count: 10
Type: Research (Applied/Empirical)
Format: Article
Language: English
Country: United States of America
Annotation: This study reviewed a sample of closed criminal cases in which control-question polygraph examinations had been used to assess the possible applicability of the Guilty Knowledge Technique in those cases.
Abstract: The Guilty Knowledge Technique is a method that involves the detection of knowledge about a crime as a means for inferring deception. It has been promoted as an alternative or replacement for the commonly used Control- Question Technique in investigative polygraph examinations; however, guilty-knowledge tests have rarely been used in actual investigations, and some authors have suggested that practical considerations prevent their widespread use. The current study found that guilty-knowledge tests might have been used in 13.1 percent of the examinations (95 percent confidence interval for similarly selected examinations: 4.9 percent to 21.4 percent). A large proportion of the remaining examinations were conducted under circumstances that would not be amenable to the use of guilty-knowledge tests, even with much effort. The results, although not fully conclusive for reasons that are discussed, indicate that the Guilty Knowledge Technique might be applied in a small proportion of FBI cases, but there is no basis to consider it as a general replacement for current methods. Recent reports of novel physiological parameters and methods of analysis for use with guilty-knowledge tests may be of limited value in criminal investigations. 35 references
Main Term(s): Criminology
Index Term(s): Courts; Polygraph reliability; Polygraph techniques
Note: This article was previously published in the FBI Crime Laboratory Digest (July 1993).
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=148968

*A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's website is provided. Tell us how you use the NCJRS Library and Abstracts Database - send us your feedback.