• The change detection database that used to be hosted here is now defunct. It has not been updated for many years and given the improved ease of online search, we have taken it offline.
• The Visual Cognition Laboratory website has moved to www.simonslab.com. Please update your bookmarks.
• If you are looking for Prof. Simons's personal website, it is now available at www.dansimons.com.
• If you are looking for more information about Prof. Simons's book, "The Invisible Gorilla," you can find that at www.theinvisiblegorilla.com
• Note: All of the information and videos that used to be available on this site are now available on most of the above websites.