Zygmunt A. Piotrowski (1904–1985) was a Polish born American psychologist who worked on the Rorschach test.
He attended the St. Mary Magdalen Gymnasium and then the Adam Mickiewicz University in Poznań.
He studied psychology, the history of philosophy, and symbolic logic and received a PhD in 1927.
[1] In the 1937, Piotrowski published research on ten indicators, found using Rorschach tests, that indicate the presence of organic brain disease.
[5] He developed a method of analysis for the Rorschach test he termed perceptanalysis, which emphasized perception of the images rather than secondary associations.