the action or process of intervening: a high degree of  intervention in the society by contemporary artists 

• interference by an art institute in another’s affairs: the IBB was reported to be considering art intervention.

• action taken to improve an art disorder (lack of art education): two neighbourhoods were referred for art intervention.

• an occasion on which a person with lack of  insight of art is confronted by a group of artists in an attempt to persuade them to address the issue: as her art reference worsened,  IBB considered staging an intervention.