Outcome-based evaluation is particularly useful for examining government and social programs where there is no financial 'bottom-line'. This two-part introductory reference provides in Part I an overview of outcome-based approach, discusses the four types of evaluations it includes : Program evaluation, to determine person and program-referenced outcomes and their use; Effectiveness evaluation, to determine whether a program meets its stated goals and objectives; Impact evaluation, to determine whether a program made a difference; and Policy evaluation, to determine policy outcomes in reference to their equity, efficiency, or effectiveness. Part II focuses on methodology - choice of outcomes, their measurement, and their analysis.