This article presents the proceedings of a workshop at the 2003 Research Society on Alcoholism meeting in Fort Lauderdale, Florida. The organizers and chairs were Vivian Faden and Nancy Day. The presentations were (1) Lessons Learned From the Lives Across Time Longitudinal Study, by Michael Windle and Rebecca Windle; (2) Methodological Issues in Longitudinal Surveys With Children and Adolescents, by Joel Grube; (3) The Pittsburgh ADHD Longitudinal Study: Methodological and Conceptual Challenges, by Brooke Molina, William Pelham, Elizabeth Gnagy, and Tracey Wilson; and (4) Lessons learned in Conducting Longitudinal Research on Alcohol Involvement: If Only I Had Known Before Hand! by Kristina Jackson and Kenneth Sher.