A Perceptual Process Approach to Selecting Color Scales for Complex Visualizations

Autor/inn/en	Breslow, Leonard A.; Trafton, J. Gregory; Ratwani, Raj M.
Titel	A Perceptual Process Approach to Selecting Color Scales for Complex Visualizations
Quelle	In: Journal of Experimental Psychology: Applied, 15 (2009) 1, S.25-34 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1076-898X
DOI	10.1037/a0015085
Schlagwörter	Eye Movements; Identification; Measures (Individuals); Literary Genres; Visual Stimuli; Comparative Analysis; Task Analysis; Experimental Psychology; Undergraduate Students; Virginia + Suchen Sie Ihr Suchwort? Augenbewegung; Identifikation; Identifizierung; Messdaten; Literarische Form; Aufgabenanalyse; Experimentelle Psychologie
Abstract	Previous research has shown that multicolored scales are superior to ordered brightness scales for supporting identification tasks on complex visualizations (categorization, absolute numeric value judgments, etc.), whereas ordered brightness scales are superior for relative comparison tasks (greater/less). We examined the processes by which such tasks are performed. By studying eye movements and by comparing performance on scales of different sizes, we argued that (a) people perform identification tasks by conducting a serial visual search of the legend, whose speed is sensitive to the number of scale colors and the discriminability of the colors; and (b) people perform relative comparison tasks using different processes for multicolored versus brightness scales. With multicolored scales, they perform a parallel search of the legend, whose speed is relatively insensitive to the size of the scale, whereas with brightness scales, people usually directly compare the target colors in the visualization, while making little reference to the legend. Performance of comparisons was relatively robust against increases in scale size, whereas performance of identifications deteriorated markedly, especially with brightness scales, once scale sizes reached 10 colors or more. (Contains 4 tables and 7 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10