Age-associated memory impairment: Definition and psychometric characteristics

Abstract

The basic definition of Age-Associated Memory Impairment (AAMI) is considered, with a particular emphasis on the psychometric features of AAMI. Empirical data are presented concerning the prevalence of AAMI and demonstrating the importance of quantifying both objective age-related decline in secondary memory as well as subjective report of decline relative to young adult years. Failure to include both of these features leads to overestimation of the prevalence of AAMI. Differences in memory test performance and subjective memory ratings are presented for subjects with AAMI and Alzheimer-type dementia relative to age and education matched elderly controls. Finally, modifications to the original AAMI psychometric criteria are suggested. More precise psychometric criteria are provided for differentiation of AAMI, dementia and amnestic disorder.