Fluxus

Artworks that are created through actions performed by the artist or other participants, which may be live or recorded, spontaneous or scripted

The term art intervention applies to art designed specifically to interact with an existing structure or situation, be it another artwork, the audience, an institution or in the public domain

The term installation art is used to describe large-scale, mixed-media constructions, often designed for a specific place or for a temporary period of time

Art that involves the use of video and /or audio data and relies on moving pictures

A term new media is used to describe the sophisticated new technologies that have become available to artists since the late 1980s that can enable the digital production and distribution of art

Hi-Red Center was a short-lived radical art collective that emerged in post-war Japan and was active between 1963 and 1964

Social sculpture is a theory developed by the artist Joseph Beuys in the 1970s based on the concept that everything is art, that every aspect of life could be approached creatively and, as a result, everyone has the potential to be an artist

Dada was an art movement formed during the First World War in Zurich in negative reaction to the horrors and folly of the war. The art, poetry and performance produced by dada artists is often satirical and nonsensical in nature

Conceptual art is art for which the idea (or concept) behind the work is more important than the finished art object. It emerged as an art movement in the 1960s and the term usually refers to art made from the mid-1960s to the mid-1970s.

Postmodernism can be seen as a reaction against the ideas and values of modernism, as well as a description of the period that followed modernism's dominance in cultural theory and practice in the early and middle decades of the twentieth century. The term is associated with scepticism, irony and philosophical critiques of the concepts of universal truths and objective reality.

Joseph Beuys is considered by some as the most important of the post-war period – a sculptor, performance artist, teacher and political activist who shifted the emphasis away from the artist as ‘object maker’ to focus on his opinions, his personality and his actions. To others he was a conman and a showman. Francesco Bonami explores how contemporary artists have both borrowed from and developed his approach

The pioneering Korean-born artist and composer Nam June Paik (1932–2006), who famously declared that the ‘future is now’, is considered to be the father of video art. In his early performance pieces and later in his installation and video works, he collaborated with many fellow avant-garde practitioners. On the eve of a retrospective at Tate Liverpool, the curator of his first European museum exhibition celebrates the early decades of Paik’s remarkable career