If disruptive behaviour problems of young children could be prevented or significantly reduced early in life, the trajectory of early disruptive behaviour problems leading to adolescent delinquency and adult antisocial behaviour could also be prevented. Unfortunately, therapeutic approaches targeting children with disruptive behaviours struggle with two main issues. First, the majority of them lack empirical evidence [14], and second, most target older children, such as pre-adolescents or adolescents, thereby missing a crucial age group in which prevention and intervention is of utmost importance [7, 13]. Currently, parent training programs, which use parents as the primary agent of change, are the most effective method in reducing disruptive behaviours in young children [15]. A review of the effects of early parent training programs aimed at preventing antisocial behaviour and delinquency, shows that parent training is an effective intervention strategy in reducing child disruptive behaviour, with a mean effect size of 0.35. However, this effect size still indicates a small to moderate effect [16]. Although parent training programs are an effective treatment for children with behavioural problems, further research is required [17].