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Effectiveness of pupil diameter in a probable-lie comparison question test for deception.

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Title: Effectiveness of pupil diameter in a probable-lie comparison question test for deception.
Authors: Webb, Andrea K. (AUTHOR), Honts, Charles R. (AUTHOR), Kircher, John C. (AUTHOR), Bernhardt, Paul (AUTHOR), Cook, Anne E. (AUTHOR)
Source: Legal & Criminological Psychology. Sep2009, Vol. 14 Issue 2, p279-292. 14p. 3 Charts, 2 Graphs.
Subjects: Pupil (Eye), Eye examination, Lie detectors & detection, Deception, Criminal investigation
Abstract: Purpose. There were three objectives of this study: (I) To assess the possibility of using pupil diameter as an index of deception in the context of a comparison question polygraph test. (2) To determine if pupil diameter would make a significant contribution to an optimal multivariate classification equation in combination with the traditional predictor variables used in field polygraph practice. (3) We explored the possibility of replacing one or more of the traditional predictor variables with pupil diameter. Methods, We used a laboratory mock crime experiment with 24 participants, half of whom stole $20 (US) from a secretary's purse. Participants were tested with a comparison question test modelled after standard field practice, Physiological measures were taken with laboratory quality instrumentation. Features were extracted from the physiological measures. Those features were subjected to a number of different statistical analyses. Results, Innocent participants showed larger increases in pupil diameter in response to probable-lie questions than to relevant questions. Guilty participants did not show differential responding to the question types, The additional of pupil diameter to a multivariate classification model approached, but did not reach significance. Subsequent analyses suggest that pupil diameter might be used to re#ace the traditional relative blood pressure measure, Conclusions, Pupil diameter was found to be a significant predictor variable for deception. Pupil diameter may be a possible replacement for the traditional relative blood pressure measure. Additional research to explore that possibility would seem to be warranted. [ABSTRACT FROM AUTHOR]
Copyright of Legal & Criminological Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Effectiveness of pupil diameter in a probable-lie comparison question test for deception.
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  Data: <searchLink fieldCode="AR" term="%22Webb%2C+Andrea+K%2E%22">Webb, Andrea K.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Honts%2C+Charles+R%2E%22">Honts, Charles R.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kircher%2C+John+C%2E%22">Kircher, John C.</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bernhardt%2C+Paul%22">Bernhardt, Paul</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cook%2C+Anne+E%2E%22">Cook, Anne E.</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Legal+%26+Criminological+Psychology%22">Legal & Criminological Psychology</searchLink>. Sep2009, Vol. 14 Issue 2, p279-292. 14p. 3 Charts, 2 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Pupil+%28Eye%29%22">Pupil (Eye)</searchLink><br /><searchLink fieldCode="DE" term="%22Eye+examination%22">Eye examination</searchLink><br /><searchLink fieldCode="DE" term="%22Lie+detectors+%26+detection%22">Lie detectors & detection</searchLink><br /><searchLink fieldCode="DE" term="%22Deception%22">Deception</searchLink><br /><searchLink fieldCode="DE" term="%22Criminal+investigation%22">Criminal investigation</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose. There were three objectives of this study: (I) To assess the possibility of using pupil diameter as an index of deception in the context of a comparison question polygraph test. (2) To determine if pupil diameter would make a significant contribution to an optimal multivariate classification equation in combination with the traditional predictor variables used in field polygraph practice. (3) We explored the possibility of replacing one or more of the traditional predictor variables with pupil diameter. Methods, We used a laboratory mock crime experiment with 24 participants, half of whom stole $20 (US) from a secretary's purse. Participants were tested with a comparison question test modelled after standard field practice, Physiological measures were taken with laboratory quality instrumentation. Features were extracted from the physiological measures. Those features were subjected to a number of different statistical analyses. Results, Innocent participants showed larger increases in pupil diameter in response to probable-lie questions than to relevant questions. Guilty participants did not show differential responding to the question types, The additional of pupil diameter to a multivariate classification model approached, but did not reach significance. Subsequent analyses suggest that pupil diameter might be used to re#ace the traditional relative blood pressure measure, Conclusions, Pupil diameter was found to be a significant predictor variable for deception. Pupil diameter may be a possible replacement for the traditional relative blood pressure measure. Additional research to explore that possibility would seem to be warranted. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Legal & Criminological Psychology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1348/135532508X398602
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      – Code: eng
        Text: English
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      – SubjectFull: Lie detectors & detection
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      – SubjectFull: Deception
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              M: 09
              Text: Sep2009
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              Y: 2009
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