Early estimates of working-memory capacity relied on the digit-span task.The data indicate working-memory capacity to be ________ items.

Question

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Early estimates using the digit-span task suggest that working-memory capacity is around 7 items (Miller, 1956). Later research has refined this estimate and proposed that capacity may be closer to 4 items for complex verbal materials and 3 items for complex visual materials (Cowan, 2001).

Early Estimates of Working-Memory Capacity Relied on the Digit-Span Task