THE FAMILIAL TRANSMISSION OF CRIMINAL CONVICTIONS*

Abstract

This article examines the familial transmission of criminal convictions in families in the Cambridge Study in Delinquent Development. Our main analyses focus on the 344 families in the Cambridge Study with two or more children. Criminal convictions were highly familial because convictions in a parent increased the risk of convictions in a child. Correlations between siblings were stronger in same‐sex siblings (.45 to .50) than in opposite‐sex ones (.27). Sibling correlations did not vary by birth order. Convictions of mothers and father correlated .55. Parent‐child correlations were about the same as within‐generation correlations between siblings. LISREL models were used to assess whether the effect of parental convictions on child convictions was direct or mediated through the quality of the family environment (i.e., supervision. child rearing, and family size). The best fitting LISREL models suggested a direct effect of parental convictions on child convictions, without any mediation by family environment. These data on fill biological siblings, however, did not permit separate estimation of family environmental versus genetic effects. One environmental effect appeared, however—a socialization effect among siblings; in families with three sons, there appeared to be mutual influence of one sibling on another. Also, regression models based on the boys suggested that family environmental variables did add to parental criminality.