"This article uses experimental data to test for a complementary relationship between formal regulations imposed on a community to conserve a local natural resource and nonbinding verbal agreements to do the same. Our experiments were conducted in the field in three regions of Colombia. Our...

"We explore the extent to which the lack of Nash payoff maximization in experimental games is attributable to the "sophistication" of participants (i.e., their understanding of strategic decision making and profit-maximizing decisions). To this end, we compare the behaviors of sophisticated...