The Visuospatial Sketchpad
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
The visuospatial sketchpad is the working memory component that holds and manipulates visual and spatial information.
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Mentally rotating a shape to see whether it fits a gap in a shelf uses the sketchpad.
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The two components have separate capacities. A verbal task and a spatial task interfere with each other far less than two of a kind.