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Police confidence in lie detection: an assessment of crime types, Miranda and interview techniques

Police confidence in lie detection: an assessment of crime types, Miranda and interview techniques Purpose – Experimental research on lie detection has indicated that accuracy rates hover around chance but that police are significantly better in detecting deception in “high” stakes rather than “low” stakes situations. This paper has three objectives: to compare confidence levels in lie detection for property crime and violent crime detectives; to compare differences in confidence levels for custodial and noncustodial interviews; and to evaluate the relationship between interrogation techniques and lie detection confidence. Design/methodology/approach – The study uses self‐report data from a sample of Texas police detectives. Findings – The results of this study show that property crime detectives are significantly more confident in their lie detection ability than are violent crime detectives. The results also highlight the fact that police detectives are significantly less confident in their lie detection abilities when the suspect has been provided his or her Miranda warnings. Originality/value – The study highlights the disparity in findings derived from self‐reported data and experimental studies on veracity judgments and the need to account for contextual factors that ultimately impact the ecological validity of this research. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Criminal Psychology Emerald Publishing

Police confidence in lie detection: an assessment of crime types, Miranda and interview techniques

Journal of Criminal Psychology , Volume 2 (1): 12 – Mar 16, 2012

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References (31)

Publisher
Emerald Publishing
Copyright
Copyright © 2012 Emerald Group Publishing Limited. All rights reserved.
ISSN
2009-3829
DOI
10.1108/20093821211210477
Publisher site
See Article on Publisher Site

Abstract

Purpose – Experimental research on lie detection has indicated that accuracy rates hover around chance but that police are significantly better in detecting deception in “high” stakes rather than “low” stakes situations. This paper has three objectives: to compare confidence levels in lie detection for property crime and violent crime detectives; to compare differences in confidence levels for custodial and noncustodial interviews; and to evaluate the relationship between interrogation techniques and lie detection confidence. Design/methodology/approach – The study uses self‐report data from a sample of Texas police detectives. Findings – The results of this study show that property crime detectives are significantly more confident in their lie detection ability than are violent crime detectives. The results also highlight the fact that police detectives are significantly less confident in their lie detection abilities when the suspect has been provided his or her Miranda warnings. Originality/value – The study highlights the disparity in findings derived from self‐reported data and experimental studies on veracity judgments and the need to account for contextual factors that ultimately impact the ecological validity of this research.

Journal

Journal of Criminal PsychologyEmerald Publishing

Published: Mar 16, 2012

Keywords: Police; Lie detection; Crime types; Miranda; Interview techniques; Police custody; Accuracy; United States of America

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