Hollywood, and any national film industry for that matter, is both a leader and follower of public opinion. In portraying foreign characters it reflects what it believes to be the popular attitudes of the time, but it also turns these often vague attitudes into concrete images. This process is dramatically highlighted by the treatment which American films have given British and Russian characters from about 1933 to the present. Our images of foreign peoples result from a ratio between objective and subjective factors, and Hollywood can make a considerable contribution to international understanding by increasing the objective factor in its treatment of foreign characters to the extent that current public opinion will allow. This study is one of a number of pilot studies undertaken in connection with the UNESCO project for studying international tensions. The author is well known, both here and abroad, as a social psychologist specializing in analysis of the social and cultural implications of films. His analytical account of the German film, From Caligari to Hitler, was published by the Princeton University Press in 1947.