🤖 AI Summary
This study addresses a critical gap in visualization research by moving beyond isolated examinations of individual visual attributes in infographics, which have limited explanatory power regarding how readers navigate trade-offs in multidimensional designs. For the first time in the field, choice-based conjoint analysis is introduced to systematically evaluate the relative influence of three design dimensions—comparison type, color scheme, and chart type—on overall user preference. Through a paired-comparison experiment simulating newspaper infographics on unemployment, the findings reveal that comparison type accounts for 58.5% of preference variance, with users strongly favoring percentage scales anchored to a reference point; chart type contributes 29.2%, while color exerts only a marginal effect. Beyond quantifying the importance hierarchy of design attributes, this work demonstrates the methodological promise of conjoint analysis for optimizing infographic design.
📝 Abstract
Infographic designers balance many choices at once: chart type, color, and whether to add a benchmark or a scale. Past work studies these factors one at a time, so we know little about how readers weigh them against each other. We address this gap with a choice-based conjoint study (N = 65) in which participants viewed pairs of infographics on a mock newspaper page about unemployment. Each infographic varied across three attributes: comparison type (none, US average, percentage scale), color (red, blue), and graphic type (single icon, icon series, bar chart). Comparison type drove most of the preference variation (58.5%), followed by graphic type (29.2%) and color (12.3%). Readers favored percentage scale markers and benchmark comparisons; color had no practical effect. The percentage scale level adds axis information rather than a benchmark, so the comparison type result mixes two distinct ideas. A single topic and a narrow palette also limit external validity. We argue that conjoint analysis is a practical and underused tool for studying visualization preferences across many design dimensions.