Commercial cognitive/memory systems are products that enhance human co
gnition and memory. Using one of our own product developments as a cas
e study, we describe three phases of commercial systems development an
d evaluation. We review published examples of Phase One research, repo
rt two quasi-experimental investigations that are representative of su
ccessful Phase Two research, and provide some measures used to assess
the product's success in the early stages of Phase Three. Finally, we
discuss the use of theories and findings from basic research in cognit
ive psychology to develop products of value to individuals and society
.