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A warning about millisecond timing in Turbo Pascal

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Abstract

It is shown that the “readkey“ function in Turbo Pascal 4.0 runs in cycles of about 40 msec, and thus must not be used to wait for a keyboard response in reaction time studies.

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References

  • Brysbaert, M., Bovens, N., d’Ydewalle, G., &Van Calster, J. (1989). Turbo Pascal timing routines for the IBM microcomputer family.Behavior Research Methods, Instruments, & Computers,21, 73–83.

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  • Graves, R., &Bradley, R. (1987). Millisecond interval timer and auditory reaction time programs for the IBM PC.Behavior Research Methods, Instruments, & Computers,19, 30–35.

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Authors and Affiliations

  1. Department of Psychology, University of Leuven, B-3000, Leuven, Belgium

    Marc Brysbaert

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  1. Marc Brysbaert
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—Accepted by previous editor, Joseph B. Sidowski

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Brysbaert, M. A warning about millisecond timing in Turbo Pascal. Behavior Research Methods, Instruments, & Computers 22, 344–345 (1990). https://doi.org/10.3758/BF03209830

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  • DOI: https://doi.org/10.3758/BF03209830

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