Maehler, D. B., & Zabal, A. (Eds.). (2026). Analysis Scripts in Large-Scale Assessments in Education 2026 (2. ed.) (Methods Series of the Research Data Center for Data on Adult Education). Cologne. 

https://doi.org/10.21241/ssoar.107189

This Methods Series serves as a guide to working with data from the Programme for the International Assessment of Adult Competencies (PIAAC). It brings together theoretical foundations, methodological explanations, and practical applications to support researchers in conducting analyses of large-scale assessment data. The Programme for the International Assessment of Adult Competencies (PIAAC) is an international large-scale study initiated by the Organisation for Economic Co-operation and Development (OECD). It measures key skills of the adult population in more than 40 countries.