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An Empirical Study on Using Visual Embellishments in Visualization

Authors: R Borgo, Abdul-Rahman, A. ;  Mohamed, F. ;  Grant, P.W. ;  Reppa, I. ;  Floridi, L. ;  Min Chen

DOI: 10.1109/TVCG.2012.197


In written and spoken communications, figures of speech (e.g., metaphors and synecdoche) are often used as an aid to help convey abstract or less tangible concepts. However, the benefits of using rhetorical illustrations or embellishments in visualization have so far been inconclusive. In this work, we report an empirical study to evaluate hypotheses that visual embellishments may aid memorization, visual search and concept comprehension. One major departure from related experiments in the literature is that we make use of a dual-task methodology in our experiment. This design offers an abstraction of typical situations where viewers do not have their full attention focused on visualization (e.g., in meetings and lectures). The secondary task introduces “divided attention”, and makes the effects of visual embellishments more observable. In addition, it also serves as additional masking in memory-based trials. The results of this study show that visual embellishments can help participants better remember the information depicted in visualization. On the other hand, visual embellishments can have a negative impact on the speed of visual search. The results show a complex pattern as to the benefits of visual embellishments in helping participants grasp key concepts from visualization.

Link to Paper


Dr R S Borgo

Dr R S Borgo

Scientific visualization, information visualisation, and visual analytics. Human factors in visualisation. Multimedia processing and visualisation.

Dr Phil Grant

Dr Phil Grant

Modelling of facial ageing and facial dynamics. Information Visualisation. Applications of genetic and logic programming.