From Leonardo to Rorschach: For a History of Inkblots

In Psychodiagnostics (1921), Hermann Rorschach described his form interpretation test as a “psychological experiment which, despite its simplicity, has proved to be of value in research and in general testing”. The experiment, based on the idea of the relationship between visual stimulus and fantastic or hallucinatory projection, relied on the technique of free interpretation of the inkblots. This technique had actually important antecedents, often overlooked in the specialist literature. A specific psychological and philosophical research path has developed this practice in studying the cognitive, affective, and imaginative functions in human beings, and predated the contribution of Rorschach by many years. In my contribution, I will focus on these antecedents. In particular, I will focus to the empirical and non-experimental approaches to the inkblots in the works of Leonardo da Vinci, Immanuel Kant, Justinus Kerner, and in the McEnery Stuart and Paine’s board game Gobolinks (1896). Then, I will focus on the experimental studies with inkblots carried out by some American, British, and Russian psychologists of the late 19th and the early 20th centuries (e.g., George Van Ness Dearborn, Stella Sharp, Edwin Kirkpatrick, Guy Montrose Whipple, Frederic Bartlett, and Fyodor Rybakov). In this historical perspective, Rorschach’s work will appear as a specific, systematic, and statistically supported development of a predated scientific heritage of psychometric studies, materials, and methods already known and used in psychological and experimental fields.