The role and methods of an evaluator of program effectiveness are discussed. Responses to questions prepared by academicians were obtained from three evaluation practitioners; an external, independent evaluator; and an internal evaluator with program implementation responsibilities. Practitioners uniformly indicated that internal evaluators were not constrained in methods by virtue of their positions. It was also agreed that all evaluators need a variety of skills from interpersonal and technical to project management. Organizations can make a cost-effective decision to use internal evaluation without compromising the quality of the evaluation. (SLD)