The Indiana University Sociology Lab (SOCLAB) offers opportunities to IU undergraduates who are interested in participating in a Sociology study. You can learn more, browse currently open studies, or sign up for a time slot at the SOCLAB Participate page.
The Sociology department also has positions for undergraduates who would like to work as a research assistant. This is a great way to learn more about research and apply what you are learning in your classes. You can earn course credit for being part of a research team.