1. Plomin, R. (1986a). Behavioral genetic methods. Journal of Personality, 54, 226-261.

Although traditional family, twin, and adoption methods have yielded important information about genetic influence on personality, newer methods are emphasized in this article. These include structural models and model-fitting, multivariate analysis, genetic change and continuity in development, shared and nonshared components of environmental variance, and genetic components of "environmental" variation.