Comparison of Methods for Learning Choropleth Maps [1988-1990: United States] (ICPSR 9759)

Published: Jan 12, 2006

Principal Investigator(s):
Terry A. Slocum

Version V1

The purpose of this study was to gather information on how people learn choropleth maps and to determine which of various computer display methods is most appropriate for learning this type of map. Software was developed to enable users to explore data commonly portrayed as a choropleth map. The software was then tested in controlled experiments using undergraduates at the University of Kansas. The design for Experiments I and II, which explored reactions to the sequencing of parts of a map as compared to the more traditional method of displaying a map all at once, consisted of formal and informal portions. In the formal portion, the actual effectiveness of traditional and sequenced maps was examined. The speed and accuracy of information acquisition and retention (memory) of subjects was the focus of this phase. In the informal portion, subjects viewed several display methods and (1) picked their most and least preferred methods, (2) explained their preferences, and (3) suggested alternative display methods. Dataset 1 contains data collected in association with the publication listed below. Datasets 2 and 3 consist of data from Experiments I and II, respectively, while Dataset 4 is a text file containing the verbal protocols used for Experiment I.

Slocum, Terry A. Comparison of Methods for Learning Choropleth Maps [1988-1990: United States]. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2006-01-12.

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National Science Foundation (SES-8706847)

1988 -- 1990

experimental data

survey data



1993-04-02 ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Standardized missing values.

2006-01-12 All files were removed from dataset 5 and flagged as study-level files, so that they will accompany all downloads.


  • Data in this collection are available only to users at ICPSR member institutions.

  • The citation of this study may have changed due to the new version control system that has been implemented.
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