1. Bingham, W. E., JR. A study of the relations which the galvanic skin response and sensory reference bear to judgments of the meaningfulness, significance, and importance of 72 words. J. Psychol., 1943, 16, 21–34.
2. Carr, H. A. Psychology. New York: Longmans, 1925.
3. Cofer, C. N. (Ed.). Verbal Learning and Verbal Behavior. New York: McGraw-Hill, 1961.
4. Cofer, C. N. and Foley, J. P. Mediated generalization and the interpretation of verbal behavior: I. Prologomena. Psychol. Rev., 1942, 49, 513–540.
5. Cofer, C. N. and Foley, J. P.,and Musgrave, B. S. (Eds.). Verbal Behavior and Learning: Problems and Processes. New York: McGraw-Hill, 1963.