Health locus of control in late life: A study of genetic and environmental influences in twins aged 80 years and older

Boo Johansson, Julia D. Grant, Robert Plomin, Nancy L. Pedersen, Frank Ahern, Stig Berg, Gerald E. McClearn

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

The factor structure of health locus of control (Form A; K. A. Wallston, B. S. Wallston, & R. DeVellis, 1978) was examined in 420 octogenarians (M age = 83.2 years), and the contributions of genetic and environmental factors to health-control beliefs in 141 octogenarian twin pairs (71 identical, 70 same-sex fraternal) were estimated. Factor analyses reproduced previously proposed factors (Internal, Chance, and Powerful Others). Associations between health-control beliefs and life satisfaction, depression, and other health-related measures (e.g., self-rated health, outpatient contacts, and hospitalization), were modest. Quantitative genetic analyses revealed significant shared environmental influence on the Chance subscale, and significant familiality (attributable to a combination of genetic and shared environmental influences) on the Powerful Others subscale; there was no evidence of familiality on the Internal subscale.

Original languageEnglish (US)
Pages (from-to)33-40
Number of pages8
JournalHealth Psychology
Volume20
Issue number1
DOIs
StatePublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Applied Psychology
  • Psychiatry and Mental health

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    Johansson, B., Grant, J. D., Plomin, R., Pedersen, N. L., Ahern, F., Berg, S., & McClearn, G. E. (2001). Health locus of control in late life: A study of genetic and environmental influences in twins aged 80 years and older. Health Psychology, 20(1), 33-40. https://doi.org/10.1037/0278-6133.20.1.33