Ss were presented with 3 dimensional figures on a translucent screen so that they appeared two dimensional to most Ss. By manipulating the wire figures the shadows were then made to appear three dimensional. Following intervals ranging from minutes to a week the former shadow patterns were again presented. A large number of Ss now saw the patterns as 3 dimensional. The authors interpret the results in terms of memory for individual figures. (PsycINFO Database Record (c) 2006 APA, all rights reserved)