[3] [4] Widrich lectures internationally and serves in numerous capacities on international expert committees for academic publications: she is currently member of the scientific committee of Cadernos de Arte Pública, Future Anterior, Vesper.
[5] In her book Performative Monuments,[6] Widrich coins the title phrase, 'performative monument', to explain why live body art influenced interactive memorials since the 1980s, building on the definition of anti-authoritarian countermonuments proposed by German artist Jochen Gerz, and the speech-act theory of British philosopher J. L.
[7] The concept has been taken up in recent literature on commemoration and public art,[8][9] and by artists, notably Doris Salcedo.
Sites of History and Contemporary Art, 2023, is "a provocative volume that is academically rigorous, and it will enrich the public debate on commemoration with its sophisticated reflections on notions of temporality and authenticity of historical markers, siting, and public participation, at a moment when monuments have been at the forefront of political activism.
"[12] In the field of performance studies, Widrich is known for her Work on Viennese Actionism, VALIE EXPORT and Marina Abramovic, with particular focus on the documentation and mediation of events, repetition, and the layering of diverse audiences over time.