Thirty development services in 14 countries were examined to evaluate the role and effectiveness of development services in furthering education, employment, and citizen participation in community and national development, to ask what foreign assistance had been provided to domestic development services in developing countries and what had been learned from these experiences, and to address future cooperation between domestic and foreign volunteer services that would go beyond current "giver-receiver" relationships. Development services were classified as training and employment schemes, study services, social and technical development services, and foreign volunteer services. Development services were found to focus on self-help or helping others through both training and work programs; but for improved effectiveness, three major policy issues were identified which require more attention: recurrent development education, employment-oriented development strategies, and citizen participation as a mobilization process. Evaluation of cooperative relationships between services pinpointed three stages of relationship: no cooperation, foreign assistance (giver-receiver), and partnership cooperation (equal terms). While previous causes persist, new causes for development services have emerged: self-reliance, interdependence, global consensus, and mutual learning and helping. (RS)