Before revision: In  1950 Alan Turing proposed his imitation game, better known as the Turing test, for determining whether a computer system claimed to adequately exhibit intelligence indeed does so.
After revision: In 1950 article in Mind, decades before the existence of anything resembling an artificial intelligence system, Alan Turing addressed the question of how to test whether machines can think, or in modern terminology, whether a computer system claimed to adequately exhibit intelligence indeed does so.