C. Lloyd Morgan (Conwy Lloyd Morgan) — British ethologist and psychologist C. Lloyd Morgan British psychologist and ethologist (1852–1936) known for 'Morgan's canon', a principle of parsimony in animal psychology that influenced behaviorism and modern comparative cogniti…
The Expression of the Emotions in Man and Animals Charles Darwin's 1872 study of how emotions are shown by facial expressions and actions in humans and other animals, arguing for evolutionary origins, universality, and inherited s…
