TY - JOUR
T1 - Health locus of control in late life
T2 - A study of genetic and environmental influences in twins aged 80 years and older
AU - Johansson, Boo
AU - Grant, Julia D.
AU - Plomin, Robert
AU - Pedersen, Nancy L.
AU - Ahern, Frank
AU - Berg, Stig
AU - McClearn, Gerald E.
PY - 2001
Y1 - 2001
N2 - 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.
AB - 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.
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U2 - 10.1037/0278-6133.20.1.33
DO - 10.1037/0278-6133.20.1.33
M3 - Article
C2 - 11199063
AN - SCOPUS:0035171940
SN - 0278-6133
VL - 20
SP - 33
EP - 40
JO - Health Psychology
JF - Health Psychology
IS - 1
ER -
