VazsonyI and his colleagues selected ninety-nine high-quality studies for their meta-analysis and examined whether the association between weak self-control and deviant behavior was different for different types of behavior. Here they found the strongest association for deviant behavior in general, at 0.56, which is an effect size rarely found in social science. But there were also remarkably strong effects of weak self-control on crime (0.39), theft (0.34), and physical violence (0.46). Indeed, other reviews of the literature routinely conclude that self-control is one
