The research of psychologist George Sperling demonstrated that the maximum capacity of short-term memory is four items of information, plus or minus one.

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George Sperling's research focused on sensory memory, specifically iconic memory, rather than short-term memory capacity. The concept of short-term memory capacity being around seven items, plus or minus two, is attributed to George A. Miller.

The Research of Psychologist George Sperling Demonstrated That the Maximum