Research on effective child and adolescent mental health interventions has grown significantly over the past two decades. Through the Children’s Behavioral Health Initiative (CBHI), Massachusetts policy makers, provider agencies, and advocacy groups are engaged in activities and decision-making on a daily basis that may involve the use of research evidence. The Massachusetts Research Use 4KIDS Study will examine the ways in which research evidence comes into play as children’s mental health services are transformed and implemented in the provider community. A Spanish translation of this publication is available for download. Originally published as: Research in the Works, Issue 4, 2011.