The Summer Institute on Longitudinal Data Analysis will be held July 12–17, 2026, at Purdue University. This intensive week-long program offers in-depth training on publicly available longitudinal data sources and advanced longitudinal data analysis techniques. Applicants should have a strong background in quantitative methods but a need for additional training in longitudinal data analysis. Applications are invited from graduate students, postdocs, faculty, industry researchers, nonprofit and public sector workers, and more. Scholarships are available that cover the full cost of tuition, travel to Purdue, housing, and food costs. The application deadline is March 15, 2026. Complete information is on the Purdue website.