Accession Number : ADA183409
Title : Understanding Charts and Graphs.
Descriptive Note : Technical rept. 1 Apr 85-31 Jul 87,
Corporate Author : HARVARD UNIV CAMBRIDGE MA DEPT OF PSYCHOLOGY
Personal Author(s) : Kosslyn,Stephen M
Report Date : 28 Jul 1987
Pagination or Media Count : 90
Abstract : Many charts and graphs do not convey information effectively. This paper develops a way of analyzing the information in charts and graphs that reveals the design flaws in the display. The analytic scheme requires isolating four types of constituents in a display, and specifying their structure and interrelations at a syntactic, semantic, and pragmatic level of analysis. As the description is constructed, one checks for violations of acceptability principles, which are derived from facts about human visual information processing and from an analysis of the nature of symbols. Violations of these principles reveal the source of potential difficulties in using a display.
Descriptors : *INFORMATION PROCESSING , *DISPLAY SYSTEMS , *COGNITION , *HUMAN FACTORS ENGINEERING , ACCEPTABILITY , GRAPHS , SOURCES , VISION
Subject Categories : Psychology
Human Factors Engineering & Man Machine System
Distribution Statement : APPROVED FOR PUBLIC RELEASE