http://tc.eserver.org/authors/Jansen,_C. A bibliography of works by Jansen, C. 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/Jansen,_C. http://tc.eserver.org/29067.html http://tc.eserver.org/29067.html Elderly people seem to encounter more problems than people from other age groups do, when using consumer electronics products and their accompanying manuals. This may be due to the absence of some kinds of information. In this study the effects of the absence of different information types in instructions on action performance were explored for different age groups. Younger (aged 20-30 y.) and elderly (aged 60-70 y.) participants installed a VCR with the help of the manual, while working aloud. The absence of goal information, consequence information and identification information in the instructions proved to have a negative effect on task performance, especially for the elderly participants. When one of these information types was missing in the instructions, the elderly performed more actions incorrectly than when the information was stated explicitly. http://tc.eserver.org/19744.html http://tc.eserver.org/19744.html Many professionals in the field of technical writing involved in the design of instruction guides, will at some point in their career have experienced some doubt whether their efforts to produce high quality documentation really make sense. Do consumers attach some value to the instruction guides for the products they have purchased? Do they use these documents at all, or are most instruction guides thrown away, together with the packing material of the equipment they come with?