Turing Test

What Does Turing Test Mean?

A Turing test is an evaluation introduced by Alan Turing in 1950 to determine whether or not someone can tell if they are communicating with a computer program after five minutes of conversation. Although there have been major advances in artificial intelligence (AI) over the past decade, no computer program has been able to pass the Turing test — yet.


Turing tests are controversial because while the mathematician Alan Turing was interested in the idea of whether or not a machine could think, the test he proposed does not do that. Instead, Turing’s test, which is carried out through an activity called the Imitation Game, can only be used to evaluate whether a program’s natural language processing (NLP), natural language generation (NLG) and natural language understanding (NLU) capabilities are strong enough for someone to think computer-generated responses came from a human being.

Techopedia Explains Turing Test

In the 1950s, mathematician Alan Turing released a paper entitled “Computing Machinery and Intelligence.” Turing was interested in the idea that under the right circumstances, a machine could think like a human being. He proposed modifying an activity called the Imitation Game to gather data and hopefully, answer the question.

How Turing’s Imitation Game Works

The Imitation Game was a popular parlor game in the Victorian Era. It required one person (called the interrogator) to send the same questions to a man and a woman in another room, and then guess which set of responses came from the woman — and which came from the man.

Turing’s version of the game requires two human players and a computer. Just as in the original game, one human (the interrogator) is put in a separate room. The interrogator then has five minutes to text each of the entities in the other room questions and guess which set of answers was generated by a computer. The test is then repeated multiple times with different interrogators.

If a jury of interrogators believe they are communicating with another human being at least 70 % of the time — when they have actually been talking to a computer program — the software’s creators can legitimately claim their AI programming has passed the Turing Test. Although there been several claims made over the past ten years, so far there hasn’t been a computer program that everyone agrees has passed Turing’s test.

ELIZA Effect

One of the first computer programs that could simulate human conversation in a somewhat convincing way is called ELIZA. Although this chatterbot was not able to pass the Turing Test, it did inspire the phrase Eliza Effect, a term used to describe the willingness people have to attribute human qualities to a computer program. The phrase if often used as a synonym for personification in the context of information technology.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…