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
Fourth follow-up of participants. Measures: Memory, Working memory,Reasoning, Spatial Reasoning, Vocabulary, Health questionnaire, Activity questionnaire, Personality. N= 1126 (11 participants of baseline, 204 of panel 2 and a new panel of 911 participants).