期刊
RESEARCH IN HUMAN DEVELOPMENT
卷 7, 期 1, 页码 45-60出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/15427600903578169
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资金
- NATIONAL INSTITUTE ON AGING [R01AG026453] Funding Source: NIH RePORTER
- NIA NIH HHS [R01 AG012448, R01 AG026728, R01 AG026453-03, R01 AG026453] Funding Source: Medline
The distinction of between-person age differences from within-person age changes is necessary for understanding aging-related change processes. Although longitudinal studies are required to address issues relating to within-person change, most studies begin using age-heterogeneous samples and conclude using survival-heterogeneous samples. Given the numerous potential confounds associated with age-heterogeneous samples, careful treatment of between-person age differences is essential to obtain the correct inferences regarding within-person age change. The authors demonstrate how failure to differentiate between-person age effects (and by extension, of survival age or other effects producing sample heterogeneity) will lead to uninterpretable inferences regarding within-person change. The authors recommend that convergence of age differences and age changes be formally evaluated whenever possible.
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