The Rorschach Inkblot Test consists of 10 inkblots printed on cards created by Hermann Rorschach in 1921. It was widely used in clinical psychology throughout the 20th century but has also been controversial due to difficulties studying it systematically. In 1969, John Exner concluded the five main scoring systems differed so significantly it was as if five different tests had been created. This led him to develop a comprehensive new scoring system, published in 1973, which became the gold standard.