ABSTRACT
Roddy is well known for many different contributions to experimental psychology in general and to the study of memory in particular. Although not usually thought of as a modeler, he is well known for his SPAM (“Sponge Associative Memory”) model. Given the distinctive nature of that model, we thought a history of distinctiveness models of memory, in which we describe, compare, and contrast different formulations of distinctiveness, would be an appropriate contribution to this volume in his honor.
