77 In general, formal, long-term programs directed at students have the greatest effect in changing attitudes and behaviors. Studies of outreach programs targeting adults are few, but the ones that do exist show that behaviors and attitudes can be changed in regards to a particular species, especially when the programs are more structured and multifaceted in nature. Experiential Education Programs Studies of experiential education have demonstrated the power of direct experiences in developing greater understanding and awareness of environmental issues. Experiential education can make important contributions in the development of environmental concern and individual actions that results in pro-conservation behaviors (Ewert, 1996). "Natural" contact with nature seems to reinforce environmental education and increase empathy for the conservation of species in the wild (Miles, 1986). Through direct experience with the natural world we can develop a better understanding of wildlife and their needs, and become more committed to their conservation. Siemer and Knuth (2001) studied the effects of an experiential fishing and aquatic stewardship program, versus the effects of non-experiential fishing and aquatic stewardship program on teenagers. The experience-based program resulted in higher levels of knowledge of fishing, aquatic environments, ecological concepts and aquatic habitat protection. In addition, youth that were involved in the experiential program placed more importance on visiting wetlands, thinking about how personal actions affect aquatic plants and animals, and limiting the impact on the environment while fishing. Knapp and Poff (2001) measured the differences in physical, experiential interpretative programs versus passive interpretative programs. He found that physical