![]() ![]() The intrinsic method was observed to generally require more time and led to higher error rates. This result suggests that extrinsic and intrinsic visualizations induce different cognitive processes. Our results showed that with the intrinsic visualization method, the participants spent significantly more time with the map legend. An SMI RED-m eye-tracker was used to determine whether either of the two visualization methods was more efficient for solving the given map-reading tasks. Eye-tracking data were collected for 23 of the participants. The experiment was performed under laboratory conditions, and Hypothesis software was used for data collection. The research sample was composed of 31 social sciences and humanities university students. Participants in the experiment were presented maps which depicted two variables (soil moisture and soil depth) and asked to identify the areas which displayed either a single condition (e.g., “find an area with low soil depth”) or both conditions (e.g., “find an area with high soil moisture and low soil depth”). We applied extrinsic and intrinsic visualizations in the study. The present study is based on our previous research and the hypothesis that the use of different visualization methods may lead to significant cognitive-processing differences. ![]() The aim of this study was to compare the performance of two bivariate visualizations by measuring response correctness (error rate) and response time, and to identify the differences in cognitive processes involved in map-reading tasks by using eye-tracking methods.
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