1983•Human Factors The Journal of the Human Factors and Ergonomics SocietyRequires access
RESEARCH NOTE Numbering Formats for Hierarchic Lists
Sidney L. Smith, Arlene F. Aucella
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Abstract
People scanned lists of hierarchically numbered items in order to perform various tasks. For tasks involving location of individual items, a list of format with complete numbering resulted in superior performance. For tasks requiring perception of list structure, an alternative format with implicit numbering was equally good if not better.