Empirical refinement of a theoretically derived competence model for informatics modelling and system comprehension Barbara Linck, barbara.linck@uni-siegen.de University of Siegen, Didactics of Informatics and E-Learning, Germany Johannes Magenheim, johannes.magenheim@uni-paderborn.de University of Paderborn, Didactics of Informatics and E-Learning, Germany Wolfgang Nelles, wolfgang.nelles@uni-paderborn.de University of Paderborn, Work and Organizational Psychology, Germany Jonas Neugebauer, jonas.neugebauer@uni-paderborn.de University of Paderborn, Didactics of Informatics and E-Learning, Germany Laura Ohrndorf, laura.ohrndorf@uni-siegen.de University of Siegen, Didactics of Informatics and E-Learning, Germany Niclas Schaper, niclas.schaper@uni-paderborn.de University of Paderborn, Work and Organizational Psychology, Germany Sigrid Schubert, sigrid.schubert@uni-siegen.de University of Siegen, Didactics of Informatics and E-Learning, Germany Abstract This paper presents the approach concerning competence model research within the project “Measurement Procedure for Informatics in Secondary Education (MoKoM)” funded by the German Research Foundation (DFG). The research process started with the establishment of a theoretically derived competence model through the analysis of international syllabi, curricula and expert papers. In a further step 30 expert interviews were conducted and analysed by the qualitative content analysis methodology. By means of this approach significant refinements and additions were made to the theoretically derived competence model and led to an empirically refined competence model. The individual steps and the final integration of both competence models are presented. Furthermore, the procedure is illustrated by a few examples, which give an overview of the alterations on the basis of selected competences and their subcompetences. Keywords Competence Model, Theoretical and Empirical Competence Analysis, Informatics System Application, Informatics System Comprehension, Informatics Modelling, Secondary Education