The Center for Usability and Aging Research (CUAR) assemble data for over 170
community-dwelling older adults, who volunteered as an informant for usability testing
and research. In the course of database enrollment, they participated in a usability
test for an automatic coffeemaker, as a demonstration of activities in CUAR. In this
article, we analyzed data of 170 people aged 60 and over, for examining relationships
between results of usability testing of a coffeemaker and database items which includes
demographics information, test results of cognitive aging (e.g. MMSE, AIST-CAT),
and subjective evaluation on difficulty of artifacts usage. The results showed the in-
dependence between two errors, which were observed in over 25% participants, and
also errors and the task accomplishment, indicated by statistical independent and also
by comparing the lists of effective items in database. Some research questions which
should be pursued for cognitive aging and usability research.
