Ian Verstegen (PhD, 2002) is Visual Studies Associate Director and a lecturer in Visual Studies at the University of Pennyslvania. He is the author of Arnheim, Gestalt and Art: A Psychological Theory (2005), A Realist Theory of Art History (2013), Cognitive Iconology: When and How Psychology Explains Images (2014), and Federico Barocci and the Oratorians (2015). Verstegen has also edited volumes on the Della Rovere family (2007) and the American philosopher Maurice Mandelbaum (2010).