Representative sample of person 30 years of age or older residing in Long Beach, or in nearby cities within Los Angeles, Riverside, San Bernadino, and Orange counties.
Data Collection Event
Second follow-up of participants. Measures: Memory, Working memory,Reasoning, Spatial Reasoning, Vocabulary, Health questionnaire, Activity questionnaire, Personality. N= 736 (106 participants of those tested in 1978 and a new panel of 630 participants).