Technological artefacts express time periods in their visualdesign. Due time, visual culture changes and thus affectsthe design of pictorial representations in technologicalproducts, such as icons in user interfaces. Previous researchof temporal aspects in human-computer interaction hasbeen focusing on particular interaction situations, but not onthe effects of design eras on user experience. The influenceof icon design styles of different eras on aesthetic andusability experiences was studied with the method ofprimed product comparisons. Affective preferences andtheir processing times were analysed in order to examinevisual usability in terms of semantic distance and aestheticappeal of icons from different design eras. Aesthetic andusability preferences of icons from different eras varied,which allowed the investigation of the process in whichusers experience icons. This examination results inelaborating the process, for example the relationshipbetween cognitive processing fluency, familiarity, andbeauty.
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