Abstract
The purpose of this paper is to provide an overview of concepts for evaluating interpretative programs and to discuss the aspects of interpretive evaluations at natural parks. The paper explains evaluative purposes, types, and timing, discusses interpretive principles, goals, and roles at natural parks, and concludes with a summary of connections between the evaluative concepts and aspects the interpretive evaluations might adopt. The purposes of evaluations determine evaluative types and timing. Thus, considering a purpose plays an important role for evaluations. Interpretive evaluations at natural parks can focus on three dimensions. First, evaluators can assess a link between the interpretive principles and their programs. They can conduct formative evaluations and program process assessments that take place during designing and implementing programs. Second, evaluators can determine a link between the interpretive goals and their programs by means of impact assessments that occur during implementing and after completing their programs. Third, evaluators can examine a link between park management and their programs through needs assessments before designing programs and through efficiency assessments before implementing programs or after completing impact assessments. By conducting evaluations, the quality of interpretation will be enhanced so that more visitors can enjoy interpretation, understand park goals, and assist the agency. Considering interpretive principles in designing a program brings about the accomplishment of interpretive goals.