4 A Theory of Graph Comprehension
نویسنده
چکیده
Venn diagrams, flow charts, tree structures, node networks, to name just a few-or to the great lengths that computer companies go to advertise the graphic capabilities of their products, to see that charts and graphs have enormous appeal to people. All of this is true despite the fact that in virtually every case, the same information can be communicated by nonpictorial means: tables of numbers, lists of propositions cross-referI ! enced by global variables, labeled bracketings, and so on. Perhaps pictorial displays are simply pleasing to the eye, but both introspection and experimental evidence (Carter, 1947; Culbertson & Powers, 1959; Schutz, l%la, I
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