Wraparound has always had implicit associations with various psychosocial theories, however, until recently only preliminary efforts had been undertaken to explain in a thorough manner why the wraparound process should produce desired outcomes. The Wraparound theory assumes that, when wraparound is undertaken in accordance with the principles and the practice model specified by the NWI, the result is an effective team process that capitalizes on the expertise and commitment of all team members while also prioritizing the perspectives of the youth and family. When the wraparound process is carried out with fidelity to the principles and the practice model, it is an engagement and planning process that promotes a blending of perspectives and high-quality problem solving.