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Article Excerpt
Bennett and Fritz (2005, this issue) raised several questions about the approach to display design that we used to create the graphic nutrition labels for our study. Their primary concerns appear to involve the theoretical principles they think should undergird an efficient display. Although their comments are informative e and constructive, they are largely misplaced because they relate not to our work but, rather, to comparative studies that have not yet been performed. Specifically, the authors maintain that (a) our results would have been stronger had our display been based more explicitly on display design principles that they advocate, (b) relevant domain semantics were not included, and (c) the task-display mapping could have been improved. We comment here on each of these points.
Display Proximity
The authors argued that the results we obtained using polar coordinate displays, although consistent with the theoretical underpinnings of our hypothesis (proximity compatibility principle), actually occurred for other reasons (the power of the perceptual systems) and that our results would have been even stronger had the task-display mapping been more explicit. According to the authors, only object configural displays are high proximity under our interpretation of the proximity compatibility principle, and a "composite" label design would have supported integrated and focused task performance more effectively.
Display proximity refers to the perceptual interaction between stimulus dimensions in an information display. High-proximity displays have significant interactions between stimulus dimensions, whereas low-proximity displays have little such interaction. Configural displays are regarded as high-proximity displays because...
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