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Author Joanne Kitchin & Chris Baber |
| Abstract In Visual Analytics, the output of automated analysis is presented to users in an interactive visualisation. By responding to this, the user can modify the parameters of the computer visualisation. This raises questions about the design of the visualisation and the appropriate level of interaction for users. This paper focuses on the impact of visualisation on user performance. A simple air target detection task (in which automated support identified possible threat aircraft) was combined with a secondary task (in which target letters had to be detected against a background). Four visual analytic displays were used to complete a target detection task over two studies. The first study explored how the displays affected workload, attentional demand and performance, and the second how workload, attentional demand and performance are affected by task load (using the same displays). Results show that the use of visual analytic displays maintains response time and primary task performance when task load increases. This suggests that the demand on attention is easier to manage when visual analytic displays are used. |
