Under this subcontract, UM personnel, Dr. Daniel Almirall will provide leadership for all methodological aspects of the proposed study; he will participate in all scientific components of the project, work closely with both PIs (Drs. Chronis-Tuscano and Stein) and, importantly, work with the TBN data analyst at the Seattle Children?s Hospital site. Specifically, Dr. Almirall will assist with further refinements of the randomized trial design, if needed, during the initial phases of the study. Dr. Almirall will be responsible for working with the TBN data analyst to develop the data analysis plan for all primary and secondary aims, and for developing and disseminating new methods concerning the design and analysis of randomized trials for the development and testing of adaptive interventions. Dr. Almirall will maintain close collaboration with Dr. Chronis-Tuscano at the University of Maryland and other project team members, through monthly phone meetings (or more, as needed), ongoing email correspondence, site visits and meetings during conference attendance.