and social context shows perhaps that this "questionable exoticization" was customarily used to push their own preconceived notions about the theatre, rather than to explore the culture they were borrowing from. Physical effects Experimental theatre alters traditional conventions of space (black box theater), theme, movement, mood, tension, language, symbolism, conventional rules and other elements. See also Performance art Physical theatre Improvisational theatre Postdramatic theatre Experimental theatre in the Arab world Fringe theatre Music theatre References Further reading Arnold Aronson: American Avant-Garde Theatre: A History (Theatre Production Studies). Routledge, 2000, Günter Berghaus: Theatre, Performance and the Historical Avant-Garde. Palgrave Macmillan US, 2005, Squiers, Anthony. An Introduction to the Social and Political Philosophy of Bertolt Brecht: Revolution and Aesthetics. 2014. Acting techniques Modernist theatre Alternative theatre Contemporary art