WebOverview. The authors use the term communism to mean Leninist and Marxist–Leninist communism,: ix–x i.e. the actually existing communist regimes and "real socialism" of the 20th century; they distinguish it from small-c communism, which has existed for millennia, while capital-c Communism began in 1917 with the Bolshevik Revolution, which …

WebRobert Mearns Yerkes (/ ˈ j ɜːr k iː z /; May 26, 1876 – February 3, 1956) was an American psychologist, ethologist, eugenicist and primatologist best known for his work in intelligence testing and in the field of comparative psychology.. Yerkes was a pioneer in the study both of human and primate intelligence and of the social behavior of gorillas and …