An expenmental subject approaches the expenmental situation at two levels At one level, he takes the situation at face value, listens to the mstnictions, perfonns according to them, and reacts to the properly mtroduced expenmental vanables. From another pomt of view, however, he seems to approach the situation as a whole He wonders what it is about, he wants to help the expenmenter and feels apprehension m this novel and essentially ambiguous situation This double performance of the subject has been recognized for a long time by students of the experiment and this recognition forms the basis of much of the criticisms of the social-psychological experiment (Mills, 1962, Orne, 1962 Recent work on physiological reactions durmg experiments has thrown light on these different approaches and has shown that subjects simultaneously view the experimental situation m these two ways Lazarus (1966) compared both the physiological reactions of subjects and their ratings of anxiety durmg threatenmg and benign films The American subjects became aroused only dunng the threatenmg film as mdicated by both the physiological measure and the anxiety ratings The Japanese reacted m the same way on their ratmgs but remamed physiologically aroused throughout the whole session Lazarus' mterpretation was that the Japanese, unaccustomed to the laboratory situation and the "subject role," reacted to the whole situation at the physiological level. Persky, Korchm, Basowitz, Board, Sabshm, Hamburg, and Grinker (1959) found that anxious subjects were physiologically aroused during all of the experimental