Self-control theory is one of the most tested theories within the field of criminology. However, one of the basic assumptions of the theory has remained largely ignored. Gottfredson and Hirschi stated that the focus of their general theory of crime is the "connection between the self-control of the parent and the subsequent self-control of the child" (1990:100). However, no study to date has specifically tested this relationship. Using data from the National Longitudinal Survey of Youth, this study finds that mothers with low self-control do indeed produce children with lower self-control. To begin to understand the mechanism responsible for this relationship, several parenting practices used by the mothers are examined. The analysis shows that the self-control of the mother influences her choice of punishments, as well as having moderate impacts on how she supervises her children. In turn, higher supervision and several choices of punishments affect the development of self-control in the child. This study therefore provides support for a vital, yet previously unexamined, piece of the general theory of crime. (Contains 4 tables, 2 figures, and 2 notes.)