Columbia Encyclopedia

Search results

163 results found

Pavlov, Ivan Petrovich

(Encyclopedia)Pavlov, Ivan Petrovich ēvänˈ pētrôˈvĭch pävˈləf [key], 1849–1936, Russian physiologist and experimental psychologist. He was professor at the military medical academy and director of the p...

Ivan V

(Encyclopedia)Ivan V, 1666–96, czar of Russia (1682–96), son of Czar Alexis by his first wife. Ivan was mentally retarded, and on the death of his elder brother, Feodor III, his succession was opposed by the su...

behavior therapy

(Encyclopedia)behavior therapy or behavior modification, in psychology, treatment of human behavioral disorders through the reinforcement of acceptable behavior and suppression of undesirable behavior. The techniqu...

behaviorism

(Encyclopedia)behaviorism, school of psychology which seeks to explain animal and human behavior entirely in terms of observable and measurable responses to environmental stimuli. Behaviorism was introduced (1913) ...

Franko, Ivan

(Encyclopedia)Franko, Ivan ēˈvän fränˈkō [key], 1856–1916, Ukrainian writer and nationalist. His realistic novels Boryslav Laughs (1881–82) and Boa Constrictor (1878, tr. 1961) portray the harsh existence...

Ivan II

(Encyclopedia)Ivan II or Ivan Asen ēˈvän äˈsən [key], d. 1241, czar of Bulgaria (1218–41). On the death (1207) of his father, Kaloyan, founder of the second Bulgarian empire, the throne was usurped by Ivan'...

Ivan III

(Encyclopedia)Ivan III or Ivan the Great, 1440–1505, grand duke of Moscow (1462–1505), creator of the consolidated Muscovite (Russian) state. He subjugated (1478) Great Novgorod, asserted his sway over Vyatka, ...

Ivan IV

(Encyclopedia)Ivan IV or Ivan the Terrible, 1530–84, grand duke of Moscow (1533–84), the first Russian ruler to assume formally the title of czar. In his later years, Ivan's character, always stern, grew tyra...

Ivan VI

(Encyclopedia)Ivan VI, 1740–64, czar of Russia (1740–41), great-grandson of Ivan V. He was the son of Prince Anthony Ulric of Brunswick-Wolfenbüttel and of Anna Leopoldovna. An infant, he succeeded his great-a...

Ivan Asen

(Encyclopedia)Ivan Asen: see Ivan II, czar of Bulgaria. ...