PVT-touch: Adapting a reaction time test for touchscreen devices

Matthew Kay, Kyle Rector, Sunny Consolvo, Ben Greenstein, Jacob O. Wobbrock, Nathaniel F. Watson, Julie A. Kientz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

30 Scopus citations

Abstract

The Psychomotor Vigilance Task (PVT) is a validated reaction time (RT) test used to assess aspects of sleep loss including alertness and sleepiness. PVT typically requires a physical button to assess RT, which minimizes the effect of execution time (the time taken to perform a gesture) on RT. When translating this application to mobile devices, a touchscreen version is useful for widespread in situ sleepiness assessments to produce more ecologically valid data. We describe the Android-based implementation of a touchscreen version of PVT, called PVT-Touch. In an evaluation (N=20), we compared four different touchscreen input techniques to a physical button: touch down, finger lift, finger tilt, and goal crossing. We found that touch down was comparable to the physical button approach used in traditional PVT in execution time and in several measures associated with sleepiness, and was preferred by most participants. We also found that finger lift may be a more precise but less intuitive measure, which may warrant further study.

Original languageEnglish (US)
Title of host publicationProceedings of the 2013 7th International Conference on Pervasive Computing Technologies for Healthcare and Workshops, PervasiveHealth 2013
Pages248-251
Number of pages4
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 7th International Conference on Pervasive Computing Technologies for Healthcare and Workshops, PervasiveHealth 2013 - Venice, Italy
Duration: May 5 2013May 8 2013

Publication series

NameProceedings of the 2013 7th International Conference on Pervasive Computing Technologies for Healthcare and Workshops, PervasiveHealth 2013

Conference

Conference2013 7th International Conference on Pervasive Computing Technologies for Healthcare and Workshops, PervasiveHealth 2013
CountryItaly
CityVenice
Period5/5/135/8/13

Keywords

  • health
  • health assessment
  • personal informatics
  • psychomotor vigilance task
  • PVT
  • reaction time
  • sleep
  • touchscreen

ASJC Scopus subject areas

  • Computer Science Applications
  • Health Informatics

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