The Minnesota Twin Study of Adult Development and Aging was supported by National Institute of Aging Grant #AG 06886. Robert F. Krueger was supported by National Institute of Mental Health Grant #MH 65137.
Personality Stability in Late Adulthood: A Behavioral Genetic Analysis
Article first published online: 16 FEB 2005
Journal of Personality
Volume 73, Issue 2, pages 523–552, April 2005
How to Cite
Johnson, W., McGue, M. and Krueger, R. F. (2005), Personality Stability in Late Adulthood: A Behavioral Genetic Analysis. Journal of Personality, 73: 523–552. doi: 10.1111/j.1467-6494.2005.00319.x
- Issue published online: 16 FEB 2005
- Article first published online: 16 FEB 2005
Abstract A sample of 833 twins from the Minnesota Twin Study of Adult Development and Aging completed the Multidimensional Personality Questionnaire (MPQ; Tellegen, 1982) twice, averaging 59.4 (sd=9.7) years of age at first and 64.4 (sd=10.2) years of age at second testing (average retest interval 5.0 years, sd=2.36, range 1.0–10.4 years). Both means and standard deviations of scale scores were extremely stable from first to second testing. In addition, sample participants tended to retain their rank order on the scales (average r=.76 across scales). Bivariate biometric analyses showed that the genetic influences on most of the scale scores were almost perfectly correlated across the two waves (range .95 to 1.00). The nonshared environmental influences were also highly correlated across the two waves (range .53 to .73). Models specifying identical variance components at the two time points and fixing the genetic correlation to 1.00 provided improved fit. The results suggest that the high stability of personality in later adulthood has a strong genetic foundation, supplemented by stability of environmental effects.