http://tc.eserver.org/authors/Gellevij,_Mark_and_Hans_Van_Der_Meij A bibliography of works by Gellevij, Mark and Hans Van Der Meij in the field of technical communication. en-us Copyright (c) 2005-08 by the EServer. All rights reserved. tclib-editorial@eserver.org (TC Library Editorial Board) webmaster@eserver.org (Geoffrey Sauer) http://tc.eserver.org/images/newlogo.gif http://tc.eserver.org/dir/Gellevij,_Mark_and_Hans_Van_Der_Meij http://tc.eserver.org/24160.html http://tc.eserver.org/24160.html None of the previous studies on screen captures addressed the functions in the framework. There was no empirical research on any of the four functions of screen captures. This article presents our research on these functions. Each section starts with a brief explanation of the function. Next, we illustrate the screen capture designs used to test the function. The remainder of each section explains the setup and results of the empirical study. The article ends with some general conclusions about the functions of screen captures. http://tc.eserver.org/13759.html http://tc.eserver.org/13759.html This study set out to validate the supportive role of screen captures for switching attention. Forty-two participants learned how to work with Microsoft Excel with a paper manual. There were three types of manuals: a textual manual, a visual manual with full-screen captures, and a visual manual with a mixture of partial- and full-screen captures. The findings show that participants in all conditions looked up from the manual to the screen on about 97% of the cases in which such a switch was called for. Rank order analyses showed that users of the visual manuals switched attention significantly more often than did users of the textual manual. No differences were found between conditions on learning effects and training time.