Written Communication XX(X) 1–35 © 2013 SAGE Publications Reprints and permissions: sagepub.com/journalsPermissions.nav DOI: 10.1177/0741088313491692 wcx.sagepub.com Article Keystroke Logging in Writing Research: Using Inputlog to Analyze and Visualize Writing Processes Mariëlle Leijten 1,2 and Luuk Van Waes 2 Abstract Keystroke logging has become instrumental in identifying writing strategies and understanding cognitive processes. Recent technological advances have refined logging efficiency and analytical outputs. While keystroke logging allows for ecological data collection, it is often difficult to connect the fine grain of logging data to the underlying cognitive processes. Multiple methodologies are useful to offset these difficulties. In this article we explore the complementarity of the keystroke logging program Inputlog with other observational techniques: thinking aloud protocols and eyetracking data. In addition, we illustrate new graphic and statistical data analysis techniques, mainly adapted from network analysis and data mining. Data extracts are drawn from a study of writing from multiple sources. In conclusion, we consider future developments for keystroke logging, in particular letter- to word-level aggregation and logging standardization. Keywords keystroke logging, writing research methods, Inputlog, cognitive processes, multiple sources 1 Research Foundation–Flanders, Antwerp, Belgium 2 University of Antwerp, Antwerp, Belgium Corresponding Author: Mariëlle Leijten, University of Antwerp, Faculty of Applied Economics, Department of Management, Prinsstraat 13 (Z 506), B 2000 Antwerp, Belgium. Email: marielle.leijten@ua.ac.be 491692WCX XX X 10.1177/0741088313491692Written CommunicationLeijten and Van Waes research-article 2013