The authors' studies, in six developing countries, indicate designing interventions that most constructively address sources of poor performance must follow from an assessment of a relatively broad set of variables, including the action environment in which all such activities take place. Effective public sector performance is more often driven by strong organizational cultures, good management practices, and effective communication networks than it is by rules and regulations or procedures and pay scales. A framework or conceptual map is described that emphasizes that training activities, organizational performance and administrative structures are embedded within complex environments that significantly constrain their success and that often account for training or organizational failure. When it was applied in the six case study countries, the framework proved useful in identifying capacity gaps and providing a tool for the strategic design of interventions that are sensitive to the roots of performance deficits. -from Authors