Comorbidity , gender , age , number of sessions , duration , intervention type , setting , medication use or dropout percentage did not influence the effect of treatment .
CONCLUSIONS Psychological treatments have a small effect in reducing parent- , teacher- and observer-rated CD problems  in children and adolescents with clinical CD problems/diagnosis .
There is not enough evidence to support one specific psychological treatment over another .
Many reports failed to provide detailed information to allow optimization of psychological treatment strategies
BACKGROUND This meta- analysis evaluates the efficacy of nonpharmacological treatments for conduct disorder ( CD ) problems in children and adolescents , based on child , parent and teacher report .
The effects of the fast track preventive intervention on the development of conduct disorder across childhood.
The impact of the Fast Track intervention on  externalizing disorders across childhood was examined . Eight hundred-ninety-one early-starting children ( 69 % male ; 51 % African American ) were r and omly assigned by matched sets of schools to intervention or control conditions . The 10-year intervention addressed parent behavior-management , child social cognitive skills , reading , home visiting , mentoring , and classroom curricula . Outcomes included psychiatric diagnoses after grade s 3 , 6 , 9 , and 12 for conduct disorder , oppositional defiant disorder , attention deficit hyperactivity disorder , and any externalizing disorder . Significant interaction effects between intervention and initial risk level indicated that intervention prevented the lifetime prevalence of all diagnoses , but only among those at highest initial risk , suggesting that targeted intervention can prevent externalizing disorders to promote the raising of healthy children
Comorbidity , gender , age , number of sessions , duration , intervention type , setting , medication use or dropout percentage did not influence the effect of treatment .
CONCLUSIONS Psychological treatments have a small effect in reducing parent- , teacher- and observer-rated CD problems  in children and adolescents with clinical CD problems/diagnosis .
There is not enough evidence to support one specific psychological treatment over another .
Many reports failed to provide detailed information to allow optimization of psychological treatment strategies
BACKGROUND This meta- analysis evaluates the efficacy of nonpharmacological treatments for conduct disorder ( CD ) problems in children and adolescents , based on child , parent and teacher report .