Information and affective valence influence judgments of complexity, liking and understanding.

Visual complexity is a key factor in perceptual and evaluative judgments. People's representation of visual complexity is constructed from quantitative and structural image features, but it is also influenced by familiarity and expertise. We examined how people represent visual complexity and its impact on perception and evaluation, focusing on information about paintings and their affective valence on judgments of visual complexity, liking and understanding. Seventy-six participants rated 60 representational artworks of negative, neutral, and positive valence on complexity, beauty and understanding. Half of the participants received written information about each artwork. Results showed that negative artworks were judged as more complex than neutral artworks and positive ones, but this effect was attenuated by the provided information. Liking judgments increased with judged complexity, were higher for positive artworks than neutral ones, for neutral than negative ones, and were higher when information was provided. Understanding judgments were higher for positive artworks than neutral ones, and higher for neutral artworks than negatively valenced ones. Information increased understanding only for negative artworks, and judged complexity did not affect these judgments. In sum, the representation of the visual complexity of an image is influenced by its valence and the available information, modulating judgments of complexity and liking, but not of understanding.