Forest owners and environmental activists are two groups who actively influence the design of forest management policies. These interest groups have more knowledge and experience with the forest. However, these interest groups may not represent the preferences of the general public for forest management. In the research here we conduct a stated-preference survey to investigate if the preferences for forest management policies differ between two forest interest groups and the general public. And we provide an on-site treatment during the survey to check how the information about forest ecosystem got from an on-site experience would affect their preferences. The results show that the preferences are significantly different between each group in both the pretest survey and post-test survey. All their preferences have not significantly changed after the forest walk.