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Long Beach Longitudinal Study
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Long Beach Longitudinal Study

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The Long Beach Longitudinal Study (LBLS) of cognition and aging seeks to study change and the predictors of change in cognitive processes across the adult life span. The LBLS approach to cognitive change and aging involves:

  • evaluating individual differences in performance on cognitive measures
  • relating sociodemographic phenomena (e.g. birth cohort, gender) to cognitive performance
  • understanding how individual charateristics (e.g. personality, physical and mental health, affect) influence cognitive abilities.
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Members

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Investigators Contacts
  • Elizabeth Zelinski, Ph.D.
    University of Southern California
  • Robert Kennison, Ph.D.
    California State University
  • Elizabeth Zelinski, Ph.D.
    University of Southern California

Conception

Study design
Cohort
Start Year
1978

Marker Paper

Zelinski EM, Kennison RF; Long Beach Longitudinal Study. The Long Beach Longitudinal Study: evaluation of longitudinal effects of aging on memory and cognition. Home Health Care Serv Q. 2001;19(3):45-55.

PUBMED 11436406

Recruitment

Sources of Recruitment
  • Individuals

Number of participants

Number of participants
2,125
Number of participants with biosamples
69

Access

Availability of data and biosamples

Data
Biosamples
Other
Yes
No
Not applicable
Don't know

Timeline

Population

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.

Selection Criteria
Minimum age
30
Newborns
Twins
Countries
  • United States of America
Territory

Long Beach, or in nearby cities within Los Angeles, Riverside, San Bernadino, and Orange counties.

Recruitment

Sources of recruitment
  • General population
General Population
  • Volunteer enrolment

Number of participants

Number of participants
2,125
Number of participants with biosamples
69
Supplementary Information

Three panel of participants:
Panel 1: 264 participants recuited in 1978
Panel 2: 630 participants recruited in 1994
Panel 3: 911 participants recuited from 2000 to 2002

 

1978: 584 participants

1981: 264 participants

1994: 736 participants

1997: 416 participants

2000: 1126 participants

2003: 644 participants

2008: 468 participants

Data Collection Events
# Name Description Start End
0 1978 Baseline

Baseline assessments. Measures: Memory, Reasoning, Spatial reasoning, Vocabulary, Health questionnaire, Activity questionnaire. n=584

 1978-04 1979-06
0 1981 follow-up

First follow-up of participants. Measures: Memory, Reasoning, Spatial Reasoning, Vocabulary, Health questionnaire, Activity questionnaire. N=264 participants of those tested in 1978.

 1981-06 1981-09
0 1994 follow-up

Second follow-up of participants. Measures: Memory, Working memory,Reasoning, Spatial Reasoning, Vocabulary, Health questionnaire, Activity questionnaire, Personality. N= 736 ...

 1994-01 1996-07
0 1997 follow-up

Third follow-up of participants. Measures: Memory, Working memory, Reasoning, Spatial reasoning, Vocabulary, Health questionnaire, Activity questionnaire. N=416 (42 participants from the ...

 1997-06 1999-07
0 2000 follow-up

Fourth follow-up of participants. Measures: Memory, Working memory,Reasoning, Spatial Reasoning, Vocabulary, Health questionnaire, Activity questionnaire, Personality. N= 1126 ...

 2000-04 2003-09
0 2003 follow-up

Fifth follow-up of participants. Measures: Memory, Working memory,Reasoning, Spatial Reasoning, Vocabulary, Health questionnaire, Activity questionnaire. N= 644(131 of panel 2 and 513 ...

 2003-04 2004-07
0 2008 follow-up

Sixth follow-up of participants. Measures: Memory, Working memory,Reasoning, Spatial Reasoning, Vocabulary, Health questionnaire, Activity questionnaire, Personality, Non-invensive physical ...

 2008-06 2012-09