Human uses of mammals that "one is well advised to study the behaviour rather than attempting to get at any underlying emotion". Charles Darwin however had accepted the idea of emotion in animals, writing his 1872 book "The Expression of the Emotions in Man and Animals" on the subject. Darwin believed that mammals had social, mental and moral lives. In "The Descent of Man" (1871), he wrote: "There is no fundamental difference between man and the higher mammals in their mental faculties." Biologists remained wary of the idea, even for the great apes, but this led to serious difficulties, as Donald O. Hebb explained
History of union busting in the United States born. The new practitioners were armed with degrees in industrial psychology, management, and labor law. They would use these skills not only to manipulate the provisions of national labor law, but also the emotions of workers seeking to unionize. After passage of the Wagner Act in 1935, the first nationally known union busting agency was Labor Relations Associates of Chicago, Inc. (LRA) founded in 1939 by Nathan Shefferman, who later in 1961 wrote The Man in the Middle, a guide to union busting, and has been considered the 'founding father' of the modern union avoidance industry. Shefferman had been a