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Journal of Aging Research
Volume 2012 (2012), Article ID 934649, 11 pages
http://dx.doi.org/10.1155/2012/934649
Research Article

Successful Aging: A Psychosocial Resources Model for Very Old Adults

1CC Wheeler Institute, Bradley University, 05 Bradley Hall, 1501 W. Bradley Avenue, Peoria, IL 61625, USA
2Gerontology Program, Iowa State University, 1096 LeBaron Hall, Ames, IA 50011-1120, USA
3Department of Foods & Nutrition, The University of Georgia, 143 Barrow Hall, 115 DW Brooks Dr, Athens, GA 30602, USA
4Institute of Gerontology, College of Public Health, The University of Georgia, 255 E. Hancock Avenue, Athens, GA 30602-5775, USA

Received 21 March 2012; Revised 17 May 2012; Accepted 22 May 2012

Academic Editor: Roger A. Fielding

Copyright © 2012 G. Kevin Randall et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives. Using data from the first two phases of the Georgia Centenarian Study, we proposed a latent factor structure for the Duke OARS domains: Economic Resources, Mental Health, Activities of Daily Living, Physical Health, and Social Resources. Methods. Exploratory and confirmatory factor analyses were conducted on two waves of the Georgia Centenarian Study to test a latent variable measurement model of the five resources; nested model testing was employed to assess the final measurement model for equivalency of factor structure over time. Results. The specified measurement model fit the data well at Time 1. However, at Time 2, Social Resources only had one indicator load significantly and substantively. Supplemental analyses demonstrated that a model without Social Resources adequately fit the data. Factorial invariance over time was confirmed for the remaining four latent variables. Discussion. This study’s findings allow researchers and clinicians to reduce the number of OARS questions asked of participants. This has practical implications because increased difficulties with hearing, vision, and fatigue in older adults may require extended time or multiple interviewer sessions to complete the battery of OARS questions.