Communicating and distorting risks with graphs: An eye-tracking study

Graphs can represent complex information in accessible ways. Unfortunately, many graphs are poorly de-signed and lead to errors in judgment and decision-making. Here, we examine the influence of distorted graphs used by advertisers and major news organizations to communicate risks. Results indicated that the distorted graphs were associated with large judgment errors and that cognitive abilities (e.g., numeracy, graph literacy, cognitive reflection) predicted differences in error rates. Eye-tracking results revealed a strong link between elaborative information search and stimuli-memory, which mediated the ability-judgment relationship. Discussion focuses on cognitive mechanisms (e.g., elaborative encoding), implica-tions for HFES graph design guidelines, and emerging opportunities for personalized decision support. Copyright 2012 by Human Factors and Ergonomics Society, Inc. All rights reserved