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American Psychological Association, Psychology and Aging, 4(26), p. 987-993, 2011

DOI: 10.1037/a0024406

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Aging and the Structure and Long-Term Stability of the Internalizing Spectrum of Personality and Psychopathology

Journal article published in 2011 by Nicholas R. Eaton ORCID, Robert F. Krueger, Thomas F. Oltmanns
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Structural psychopathology research has identified two broad factors--internalizing and externalizing--that account for comorbidity among many common mental disorders. Evaluating the utility of these factors for nosology, research, and treatment entails expanding beyond a cross-sectional understanding to how these factors evolve over time. We tested factorial invariance of internalizing in three age cohort groups--35 years and under (n = 1,729), 36-50 years (n = 2,719), and over 50 years (n = 2,601)--as well as the long-term stability of internalizing within individuals. Internalizing showed a notable degree of invariance between cohorts and within cohorts over time; long-term internalizing stability was equivalently moderate-to-high in each cohort.