Beaver, Kevin M., Brian B. Boutwell, J.C. Barnes, Joseph A. Schwartz, and Eric J. Connolly. 2014. “A Quantitative Genetic Analysis of the Associations among Language Skills, Peer Interactions, and Behavioral Problems in Childhood: Results from a Sample of Twins” Merrill-Palmer Quarterly 60 (Spring):142-167.

Barnes, J.C., John Paul Wright, Brian B. Boutwell, Joseph A. Schwartz, Eric J. Connolly, Joseph L. Nedelec, and Kevin M. Beaver. 2014. “Demonstrating the Validity of Twin Research in Criminology” Criminology 52 (November):588-626.

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