In 1967 the Head Start Evaluation and Research Center at Boston University initiated a project aimed at devising and assessing new clinical approaches to primary and secondary prevention of emotional disturbance in preschool children. The growth of "Black Power" plus a year of experience resulted in the making of several changes in the program in 1968: (1) the clinical activities were moved from the imposing offices at Boston University to suitable quarters in the heart of the black community being served; (2) the personnel involved were expanded to include not only parents, but key persons from the community involved; (3) all participants were converted to a fresh conception of what could be achieved in a given community by a more inclusive and coordinated effort. Thus, the project, as now structured, provides communities with the knowledge of how to handle emotional disturbances of young children within their own indigenous social system. (WD)