This article describes three studies that were designed to provide undergraduate students with opportunities for hands-on experience in research. Students were involved in all aspects of the studies--from the development of the research questions to the reporting of the results. The studies examined the effectiveness of signs and posters in influencing three health behaviors: taking stairs instead of elevators, complying with a smoking policy, and cleaning fitness equipment after use. In the stair study and the fitness equipment study, signs and posters were associated with significant increases in the desired behaviors. The smoking policy study results indicated that signs and posters were not effective in motivating people to comply with the policy. (Contains 3 tables.)