Nielsen and her team investigated the sorts of art preferred by hospital patients. They determined that patients “primarily ranked items to favor figurative art painted in light colors.”
Stine Nielsen, Michael Mullins, Lars Fich, and Kirsten Roessler. 2017. “The Significance of Certain Elements in Art for Patients’ Experience and Use.” Visual Anthropology, vol. 30, no. 4, pp. 310-327.