In Sperling's memory experiment, research participants were shown three rows of three letters, followed immediately by a low, medium, or high tone. The participants were able to report

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Participants were able to report any one of the three rows of letters, but not all three with perfect accuracy. This is because the tone following the letters indicated which row the participants should focus on remembering, and the other two rows were not as well-remembered due to the brief presentation and delay before recalling the information.

In Sperling's Memory Experiment, Research Participants Were Shown Three Rows