Inkblot tests were developed in 1921 by psychiatrist Hermann Rorschach. He used them to evaluate people’s emotional and cognitive function based on their individual interpretations of randomly created ink patterns, specifically looking for signs of personality disorders like schizophrenia. They’re fun to play with at parties, and perhaps they could be revealing in some way. People often see animal forms and things of a violent or sexual nature in the inkblots. Inkblots tests gained popularity for a short time as personality tests that could reveal a person’s true nature.