Iwona Blazwick is Director of the Whitechapel Gallery, London. Petra Lange-Berndt is Chair of Modern and Contemporary Art at the University of Hamburg.

Barry Schwabsky is a London-based writer.

Currently International Reviews Editor at Artforum and Art Critic at The Nation, he has contributed to numerous art publications, including Phaidon's Jessica Stockholder (1995) and Vitamin P (2002), and is the author of The Widening Circle: The Consequences of Modernism in Contemporary Art (1997), as well as several volumes of poetry.

He has taught at Yale, New York University and Goldsmiths, among other institutions.