New in paperback. Hardcover was published in 2022. Katja Guenther traces the history of the mirror self-recognition test, exploring how researchers from a range of disciplines - psychoanalysis, psychiatry, developmental and animal psychology, cybernetics, anthropology, and neuroscience - came to read the peculiar behaviors elicited by mirrors. Investigating the ways mirrors could lead to both identification and misidentification, Guenther looks at how such experiments ultimately failed to determine human specificity.