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There are fundamental rhetorical and organizational reasons for subdividing any large body of information, whether it is delivered on the printed page or in a World Wide Web site. Underlying all organizational schemes are the limitations of the human brain in holding and remembering information. Cognitive psychologists have known for decades that most people can only hold about four to seven discrete chunks of information in short-term memory. The goal of most organizational schemes is to keep the number of local variables the reader must keep in short-term memory to a minimum, using combination of graphic design and layout conventions along with editorial division of information into discrete units. The way people seek out and use information also suggests that smaller, discrete units of information are more functional and easier to navigate through than long, undifferentiated units


 

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