AbstractGet full access to this articleView all access options for this article.Get accessReferences1. Mehrabian, A. Silent messages. Belmont, Ca.: Wadsworth, 1971.2. Schwartz, S.H. Moral decision making and behavior. In J. Macaulay and L. Berkowitz, (Eds,) Altruism and Helping Behavior. New York: Academic Press, 1970.