Evidence collected by Beck, Levinson, and Irons (2009) indicates that Albert B., the “lost” infant subject of John B. Watson and Rosalie Rayner’s (1920) famous conditioning study, was Douglas Merritte (1919–1925). Following the finding that Merritte died early with hydrocephalus, questions arose as to whether Douglas’s condition was congenital, rather than acquired in 1922, as cited on his death certificate.