Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Paced Auditory Serial Attention Test

  • Stephen CorreiaEmail author
  • Christina Figueroa
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_1319




The Paced Auditory Serial Addition Test (PASAT) is a test of serial addition designed to assess information processing speed, working memory, and divided attention. Gronwall and colleagues first used the task clinically as an objective measure of severity of traumatic brain injury (TBI) and as a means of gauging progress during the recovery period.

The test involves presentation of a random string of single-digit numbers (1–9). The subject is instructed to add each new number to the one immediately preceding it and verbally call out their answer; the second number is added to the first, the third to the second, and so on. For example, for the string 4–7–2–3, the correct responses are 11, 9, and 5 (i.e., 4 + 7 = 11; 2 + 7 = 9; 2 + 3 = 5; and so on). Most versions involve up to four trials of 50 or 61 digits with the interstimulus interval (ISI) becoming shorter on each successive trial thereby increasing the cognitive demands and difficulty on successive...

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References and Readings

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© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Psychiatry and Human BehaviorAlpert Medical School, Brown UniversityProvidenceUSA
  2. 2.Memory and Aging ProgramButler HospitalProvidenceUSA