Experiments in visual search III. Effects of patterns of varying probability on scanning strategies
1995 (English)Report (Other scientific)
In most real work situations, the probability that an interesting item will be found in a certain position on the screen will be unevenly distributed over the screen area. A fre quent user may learn the probability pattern and adjust his or her scanning strategy to accommodate for this. In an experiment we investigated how scanning strategies were affected by such patterns of unevenly distributed probability. The results showed that users easily learn to adopt their search strategies to patterns of varying probability. The search time was significantly shorter compared to when the probability was evenly distributed over the screen area. Although the subjects in the study were unable to give a correct description of the probability distribution over the screen area, they were nevertheless able to adopt mathematically optimal search strategies.
Place, publisher, year, edition, pages
, Report no. 57/95 from Uppsala University Center for Human-Computer Studies, Uppsala, Sweden
Computer and Information Science Psychology (excluding Applied Psychology)
IdentifiersURN: urn:nbn:se:uu:diva-32339OAI: oai:DiVA.org:uu-32339DiVA: diva2:60237