This paper evaluates the real-world effectiveness of an emotion-focused, multi-systemic early intervention combining an emotion socialization parenting program with a child and school socio-emotional intervention for children with emerging conduct problems. Schools in lower socioeconomic areas of Victoria, Australia were randomized into intervention or wait-list control. Children in the first 4 years of elementary school were screened for behavior problems and those in the top 8 % of severity were invited to participate in the intervention. The study sample consisted of 204 primary caregivers and their children (Mage=7.05, SD=1.06; 74 % boys). Data were collected at baseline and 10 months later using parent and teacher reports and direct child assessment. Measures of parent emotion socialization, family emotion expressiveness, and children's emotion competence, social competence and behavior were administered. Results showed intervention parents but not controls became less emotionally dismissive and increased in empathy, and children showed better emotion understanding and behavior compared to control children. These outcomes lend support for an emotionfocused approach to early intervention in a real-world context for children with conduct problems.Keywords Emotion coaching . Emotion socialization . Emotion competence . Behavior problems . Parenting . Early intervention . Multi-systemic intervention Disruptive behavior problems in young children are a risk factor for conduct disorder, later substance abuse, poor peer relations, delinquency and violence which add substantial costs to society on a social and economic level (Moffitt 1993;Sawyer et al. 2000). The first years of school are an important time for identifying children at risk and intervening before these problems become intractable (Webster-Stratton and Reid 2004). Successful interventions include multisystemic components for lasting effects such as parent, child and school-based programs (Sanders et al. 2000). Typically, multi-systemic interventions include behavioral parent training based on social learning principles, which have also been found effective as stand-alone interventions for reducing children's behaviour problems (for a meta-analysis see Thomas and Zimmer-Gembeck 2007). Up to one third of families who receive this type of parenting intervention, however, do not benefit (Dumas 2005; Webster-Stratton and Hammond 1997) and behavioral parent training has been found less effective when there are attachment problems, when parents have difficulties regulating emotions, or when there is maternal depression or marital conflict ( DOI 10.1007/s10802-014-9944-z Kendall 2002). Multi-systemic interventions that incorporate a parenting program targeting parent emotion socialization (responses to emotions in oneself and one's child), in combination with a child intervention, which focuses on improving emotional competence (e.g., skills in understanding and regulating emotions), are yet to be evaluated. The current study is a real-world effe...