BRUCE GOLDSTEIN is Associate Professor Emeritus of Psychology at the University of Pittsburgh and Adjunct Professor of Psychology at the University of Arizona. He has received the Chancellor's Distinguished Teaching Award from the University of Pittsburgh for his classroom teaching and textbook writing. He received his bachelor's degree in chemical engineering from Tufts University and his PhD in experimental psychology from Brown University; he was a postdoctoral fellow in the Biology Department at Harvard University before joining the faculty at the University of Pittsburgh. Bruce has published papers on a wide variety of topics, including retinal and cortical physiology, visual… attention, and the perception of pictures. He is the author of SENSATION AND PERCEPTION, 9th Edition (Cengage, 2014), and the editor of the BLACKWELL HANDBOOK OF PERCEPTION (Blackwell, 2001) and the two-volume SAGE ENCYCLOPEDIA OF PERCEPTION (Sage, 2010).