The paper "From skeuomorphism to flat design: age-related differences in performance and aesthetic perceptions" co-authored by João Guerreiro in collaboration with Inês Urbano and Hugo Nicolau (INESC-ID & Instituto Superior Técnico) has been published at Behaviour and Information Technology, a top-ranked journal in the field of Human-Computer Interaction (h5-index: 36).

This paper addresses the impact of the changes in the visual appearance of graphical user interfaces. Despite the growing popularity of interfaces with minimalist and flat designs, these can be challenging for older adults who experience a decline in visual and cognitive abilities. Still, little is known about user performance, aesthetic perception, and preference of older adults regarding different interface designs. In this paper, the authors investigate how age affects users' performance and aesthetic perceptions when interacting with skeuomorph, skeuominimalist, and flat designs.