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Title: Beyond Nature Versus Nurture: DF Analysis of Nonshared Influences on Problem Behaviors
Resulting in 1 citation.
1. Rodgers, Joseph Lee
Rowe, David C.
Li, Chengchang
Beyond Nature Versus Nurture: DF Analysis of Nonshared Influences on Problem Behaviors
Developmental Psychology 30,3 (May 1994):374-384.
Also: http://psycnet.apa.org/journals/dev/30/3/374/
Cohort(s): Children of the NLSY79, NLSY79
Publisher: American Psychological Association (APA)
Keyword(s): Behavior Problems Index (BPI); Childbearing; Height, Height-Weight Ratios; Home Observation for Measurement of Environment (HOME); I.Q.; Kinship; Siblings

DeFries and Fulker (1985) proposed a regression modeling approach -- since named DF Analysis -- that separates heredity and common environmental influences using scores from kinship pairs. A number of adaptations have been developed and used in empirical research that demonstrate the breadth of application of DF Analysis. We begin by reviewing past work and the several DF Analysis extensions that have been suggested. Following, we describe a new extension of DF Analysis in which measured indicators of the nonshared environment are added to the model. These indicators represent specific sources of environmental influence that cause related children to be different from one another. We present two empirical studies using over 7000 5-11 year-old children from the National Longitudinal Survey of Youth (NLSY). Within the NLSY we identify twin, full-sibling, half-sibling, and cousin pairs. The first study is a validity analysis of kinship height and weight data. The second study demonstrates the nonshared environmental extension through an analysis of problem behavior scores. Specific nonshared environmental influences that are investigated are spanking by the mother, reading by the mother, and quality of the home environment.
Bibliography Citation
Rodgers, Joseph Lee, David C. Rowe and Chengchang Li. "Beyond Nature Versus Nurture: DF Analysis of Nonshared Influences on Problem Behaviors." Developmental Psychology 30,3 (May 1994):374-384.