Theories of Persuasion-Hovland Research Hovland Research in World 龄恭 War Two The Battle of Britain is a movie that exposes Britain air force fight against Hitler's invasion to motivate American soldiers to enter the war bravely. Sample soldiers:2100. Ca HoviadTheories of Persuasion—Hovland Research • Hovland Research in World War Two • The Battle of Britain is a movie that exposes Britain air force fight against Hitler’s invasion to motivate American soldiers to enter the war bravely. • Sample soldiers: 2100