Carl Hovland

Carl Iver Hovland was a psychologist working primarily at Yale University and for the US Army during World War II who studied attitude change and persuasion. He first reported the sleeper effect after studying the effects of the Frank Capra propaganda film Why We Fight on soldiers in the Army. In later studies on this subject, Hovland collaborated with Irving Janis who would later become famous for his theory of groupthink. Hovland also developed social judgment theory of attitude change. Carl Hovland thought that the ability of someone to resist persuasion by a certain group depended on your degree of belonging to the group. ^{Carl Hovland, American psychologist and academic (d. 1961)}

12 June 1912

Born on the same birth date (12 June 1912): Bill Cowley

Born on the same birth day (12 June): Bert Sakmann • Brad Delp • Dave Berg (cartoonist) • Go Seigen • Innes Ireland • John Wetton • Klaus Basikow • Patrick Gass • Raitis Grafs • Robert Radclyffe, 5th Earl of Sussex • William Attewell

Born in the same month (June 1912): Alan Turing • Anthony Buckeridge • Brian Johnston • E. R. Braithwaite • Geoffrey Baker (British Army officer) • Harry Holtzman • Jacques Hélian • Jean Lesage • José Pablo Moncayo • Ludwig Bölkow • Mary McCarthy (author) • Mary Wesley • Mohammad Hassan Ganji • Virginia MacWatters • Vishnu Prabhakar • Wilhelmina Barns-Graham • William Baziotes • Émile Peynaud