ABSTRACT
A meta-analysis is a study that pools data from many studies to see if an effect exists when all the data is combined. The d-type effect size for the all the studies in a meta-analysis is referred to as the "Overall Mean d". The d-type effect size is the mean difference which is standardized through dividing by the standard deviation. The meta-analysis considers programs aimed at reducing incidents of domestic violence after an offender has been to court for domestic violence charges. This chapter assesses the effects of post-arrest court mandated interventions for domestic violence offenders with the aim of reducing their future likelihood of re-assaulting above and beyond what would have been expected by routine legal procedures. It uses standard meta-analytic methods. Effects measured on continuous type measures were encoded as standardized mean difference type effect sizes (d).
