Modelling and Analysis of Human Work Situations as a Basis for Design of Human-Computer Interfaces
1993 (English)In: Proceedings of ACM INTERCHI'93 Conference on Human Factors in Computing Systems: Adjunct Proceedings, 1993, 217- p.Conference paper (Refereed)
Humans process information not only consciously, but also at a low cognitive level without any need for conscious attention. This has implications for task analysis and interface design. We have performed field-studies of reading behaviour in different work situations. A new method has been used which involves a kind of "field-experiment". The form of actual work documents have been manipulated in different ways, and the resulting impact on reading and interpretation have been studied. The results show that many reading tasks in typical work-situations can be described as composed of conscious reading and a number of small task components, called micro tasks, which are processed in parallel without any need for conscious attention. Since they are not processed consciously the reader is often not aware of them. When a work situation is computerized, the conditions for processing these micro-tasks may be radically changed. The processing may now need conscious capacity which is limited. This can explain and suggest solutions to e.g., orientation problems and problems of high cognitive overhead in human-computer interaction.
Place, publisher, year, edition, pages
1993. 217- p.
IdentifiersURN: urn:nbn:se:uu:diva-23915ISBN: C.CHI.93.2.217OAI: oai:DiVA.org:uu-23915DiVA: diva2:51689