Rorschach test

The Rorschach test is a psychological test in a form of inkblots on the cards. It is still used. It was named after Swiss psychologist Hermann Rorschach.
The test determines the state of patients and their problems.
History.
Herman Rorschach was not the first who invented this method. Interpretation of inkblots was used in the game Gobolink from the late 19th century. In Europe such games were known as kleksography. 
Then Alfred Binet appeared. He first used it for psychological research. It determined the work of the imagination and consciousness. 
In 1921, Rorschach wrote his main book "Psychodiagnostik" where he described the test. 
Also Austrian psychologist SIgmund Freud showed how psychic expressions of the individual (in speech, dreams, and so on) could be read as signs pointing to unconscious processes. These processes were significant for a fuller and deeper understanding of his personality. Finally, Freud stressed the very earliest experiences of the child in the family as of primary significance in the moulding of personality. 
Similar tests have been devised by American psychologist Wayne H. Holtzman. 
Later the test began to be used in all sorts of speculative ways. Researchers gave the test to Nazi criminals during Nuremberg Trials hoping to find out the psychological roots of mass murder.
Method.
Rorschach showed inkblots to many people with the same question: "What might this be?". It showed how people approached the task. It showed also a different perception of people. Some people saw the movement on the pictures, some not. 
Usually inkblots pictures are shown secretly to make the patients' responses spontaneous. 
In mass culture.
Rorschach test is used in many films, TV series, books, comics.