Furthermore
Extramural positions
seit 2003
- Member of the Regional History Association for the Mark Brandenburg
- Member of the association for support of the sign language of the deaf in Switzerland (VUGS)
- Member of the sponsoring society of the "Bibliothek für Sprach- und Hörgeschädigtenwesen Leipzig" (library of speech and hearing impairment Leipzig)
seit 2002
- member of academic staff in the working group "Rahmenplanentwicklung für das Unterrichtsfach Deutsche Gebärdensprache/ Gehörlosenkunde" (Development of a curriculum for the school subject Sign Language/ Deaf Studies) under the leadership of Prof. Klaus-B. Günther (Humboldt-Universität zu Berlin) in collaboration with the task force "Pädagogik) at Deutscher Gehörlosenbund (German Association of the Deaf)
1999-2002
- Cooperation at the concept development, constitution and scientific monitoring of the bilingual school experiment at Ernst-Adolf-Eschke Schule für Gehörlose Berlin within the working group "Bilinguale Erziehung an Gehörlosenschulen, Berlin" (Bilingual Education at Deaf Schools, Berlin)
since 2001
- board member of the German Professional Association for Education of the Deaf and Hard of Hearing (DFGS)
since 2000
- Member of the working group "Bilinguale Erziehung an Gehörlosenschulen, Berlin" (Bilingual Education at Deaf Schools, Berlin)
since 1993
- Member of the Society for Sign Language and Culture of the Deaf (GGKG)
- Member of the Community of interest for the promotion of "Culture and History of the Deaf (KuGG)" in the "Association for the promotion of the Deaf and Hard of Hearing"
- Meber of the German Association for educational science, der Deutschen Gesellschaft für Erziehungswissenschaft, department for research in history education