The Rorschach inkblot test consists of 10 inkblots that subjects describe in order to examine their personality and thinking processes. It was developed in the early 1900s by Swiss psychiatrist Hermann Rorschach, who was interested in how people perceive ambiguous images. The test administration involves 4 phases - introduction, response, inquiry, and interpretation of codes assigned to the responses. Responses are analyzed both qualitatively and quantitatively to derive scores related to various personality characteristics.