E-Prime Timing


Welcome to the E-Prime timing information area.


TIMING ALERT: Machine configuration, design, or faulty components may result in bad timing data


How accurate is E-Prime?

E-Prime reports timing accuracy to the millisecond precision level. Although E-Prime coordinates with the operating system and external devices to continually have control of the computer's execution, the operating system or other devices can take control at any time, which will cause an experiment to be suspended while the operating system task is completed. When these instances occur, E-Prime continues to accurately timestamp so that post-analysis can filter the trials correctly.


Is E-Prime accurate on Windows 7, 8.1, and 10?

As stated above, E-Prime reports timing accuracy to the millisecond precision level. PST has conducted formal timing tests on Windows 7, 8.1, and 10 (E-Prime 3.0 Timing Data). For more information, please consult the Critical Timing Chapter in the E-Prime documentation.


E-Prime 3.0 Timing Data: Windows 7, 8.1, and 10

E-Prime 2.0 Timing Data: Windows XP, 7, 8, 8.1, and 10

E-Prime 1.x Timing Data: Windows ME, 2000, and XP


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