Theodor Leiber, Prof. Dr. Dr., is Scientific Advisor/HE researcher, at the Evaluation Agency Baden-Württemberg (evalag), Germany. He is specialised in the topics of evaluation, methods of social empirical research, data analysis, EU-project management, impact research and higher education research. Between 2013 and 2016 he has been the coordinator of the IMPALA EU-project on ‘Impact Analysis of External Quality Assurance Processes of Higher Education Institutions’. He has also been involved in ENQA’s working group on Impact and is a member of the German Society for Evaluation (DeGEval e.V.) contributing to the groups on ‘methodology in evaluation’ and ‘higher education institutions’.