Roberts M – FROM REASONING AND INTELLIGENCE RESEARCH TO INFORMATION DESIGN

Description

Schematic transit maps—highly stylised diagrams that prioritise routes and connections over geographic accuracy—are ubiquitous but challenging to design well. Henry Beck’s octolinear London map is a celebrated exemplar, yet other high-profile schematics (Vignelli’s New York, Madrid’s grid, Paris’s official map) show that excessive abstraction or poor handling of line trajectories can reduce usability or public acceptance. Empirical studies reveal a frequent dissociation between subjective preferences (often biased toward familiar octolinearity) and objective performance: people may prefer maps that are harder to use. Roberts proposes a five-part framework for effective design—simplicity, coherence, balance, harmony, and topographicity—arguing octolinearity is not universally optimal and that angle-sets should be chosen to fit network structure. Grounding design in reasoning and intelligence research explains how element salience and working-memory load affect map comprehension. Well-designed schematics should speed planning, reduce errors, support learning, and be accepted by users; testing and prioritising criteria empirically is essential.