Presented in this volume is a discussion of current literature and theoretical issues relating to three aspects of late-life age-related cognitive change. Firstly, evidence regarding aging and the basic mental processes of attention, motor control, memory, language, problem-solving, and intelligence are presented. Secondly, the role of personal traits such as personality and self-efficacy in the aging of cognitive function are developed, along with self-awareness of cognitive processes and age changes in the monitoring of these processes. Thirdly, consideration is given to the study of interventions to delay or remediate the cognitive declines of aging.