Behavior Research Methods & Instrumentation

, Volume 7, Issue 2, pp 175–178 | Cite as

The precision of latency measures on real-time computing systems

  • Thomas W. Christian
  • Peter G. Polson
Session VIII Contributed Papers: General Techniques And Applications


We derive expressions for the bounds on the precision of response latency measures made using a free-running digital clock and discuss other possible sources of measurement errors. In a multitask, real-time environment, there are three possible sources of large measurement errors: (1) the finite resolution of the digital clock, (2) unscheduled delays in recording the time of occurrence of an event, and (3) the uncertainty of the time of stimulus presentation for stimuli presented on a CRT terminal.


Response Latency Stimulus Presentation Large Measurement Error Digital Clock Finite Resolution 
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Copyright information

© Psychonomic Society, Inc. 1975

Authors and Affiliations

  • Thomas W. Christian
    • 1
  • Peter G. Polson
    • 1
  1. 1.The Computer Laboratory for Instruction in Psychological ResearchUniversity of ColoradoBoulder

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