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Portland Digit Recognition Test

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Encyclopedia of Clinical Neuropsychology

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Synonyms

PDRT

Description

The Portland digit recognition test (PDRT) is used to assess performance validity by detecting suboptimal effort during neuropsychological evaluations. The PDRT is a forced-choice performance validity test (PVT) consisting of 72 trials that was developed by Binder and Willis (1991). For each PDRT trial, a five-digit number is initially presented, which is followed by a distractor period in which the examinee is required to count backward for either 5 s (first 18 trials), 15 s (second 18 trials), or 30 s (last 36 trials). Then, two five-digit numbers are presented, and the examinee is instructed to identify the number that was initially presented. By increasing the time for the distractor periods, the PDRT achieves the appearance of increasing the level of difficulty as the test progresses. The original version of the test required the oral presentation of the initial five-digit number and then the presentation of the two recognition choices on a 3æ5 index...

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References and Readings

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Author information

Authors and Affiliations

  1. Neuropsychology Research Program, University of Nevada, Las Vegas, Las Vegas, NV, USA

    Davor Zink

  2. Department of Psychology, University of Nevada, Las Vegas, Box 455030, 4505 Maryl and Parkway, Las Vegas, NV, 89154-5030, USA

    Daniel N Allen

Authors
  1. Davor Zink
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  2. Daniel N Allen
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Correspondence to Davor Zink .

Editor information

Editors and Affiliations

  1. Richmond, Virgin Islands, USA

    Jeffrey Kreutzer

  2. Kessler Foundation , West Orange, New Jersey, USA

    John DeLuca

  3. Suite 200 , Wynnewood, Pennsylvania, USA

    Bruce Caplan

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Zink, D., Allen, D.N. (2017). Portland Digit Recognition Test. In: Kreutzer, J., DeLuca, J., Caplan, B. (eds) Encyclopedia of Clinical Neuropsychology. Springer, Cham. https://doi.org/10.1007/978-3-319-56782-2_206-2

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  • DOI: https://doi.org/10.1007/978-3-319-56782-2_206-2

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  • Print ISBN: 978-3-319-56782-2

  • Online ISBN: 978-3-319-56782-2

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