Display update rate was conceived in this experiment as being resolvable into two components, the duration of each display and the amount of change in the information being displayed from one display to the next. Subjects viewed sequences of displays consisting of four 3-digit numbers. At varying points in the sequence, the subject was required to recall one of the 3-digit numbers from the immediately preceding display. Displays were projected for either 4.8 or 8.6 sec, and either four or two 3-digit numbers were changed from one display to the next display. The hypothesis that fewer 3-digit numbers would be correctly recalled at higher update rates was not supported.
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