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Timing accuracy under microsoft windows revealed through external chronometry.

Christopher D Chambers1, Mel Brown

  • 1Department of Psychology, University of Melbourne, Melbourne, Victoria, Australia. c.chambers@psych.unimelb.edu.au

Behavior Research Methods, Instruments, & Computers : a Journal of the Psychonomic Society, Inc
|May 2, 2003
PubMed
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This study demonstrates that Microsoft Windows operating systems can achieve submillisecond timing resolution for psychological research. Proper software control ensures accurate timing across various computer systems and input devices.

Area of Science:

  • Psychological research methodology
  • Computer systems performance
  • Human-computer interaction

Background:

  • Previous research questioned Windows' timing precision for psychological experiments.
  • Concerns existed regarding the operating system's ability to support accurate timing resolution.

Purpose of the Study:

  • To reexamine the timing accuracy of Windows 95/98 for psychological research.
  • To assess the impact of system optimization and input devices on timing precision.

Main Methods:

  • Utilized external chronometry and maximized system priority for timing software.
  • Employed timing functions with millisecond or better theoretical resolution.
  • Evaluated peripheral response devices and varied computer microprocessor speeds.

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Main Results:

  • Submillisecond timing resolution is achievable under Windows with proper software control.
  • The standard parallel port demonstrated the highest timing precision among tested devices.
  • Serial mice also provided sufficient timing precision for reaction time experiments.

Conclusions:

  • Windows 95/98 can support high-precision timing essential for psychological research.
  • Optimized software and specific hardware configurations enable accurate timing on diverse computer systems.