Expert interviews with people who position themselves as (multiply) marginalized in the academic system form the basis of this research project. On the one hand, quantitative survey instruments for the social positioning of individuals are developed in a participatory manner, so that the social positioning can be adequately mapped using relevant socio-demographic characteristics. The Delphi method is used for this process. In addition, barriers in the academic system will be developed with the experts. Throughout the course of the project, there are opportunities to include the perspectives of people from affected communities (e.g., in the development of research questions, information needs in the communities).