1. King, R. P., & Lockhart, K. A. A behavioral assessment of preference for erotic visual stimuli. Paper presented at Third Annual Meeting of Midwestern Association of Behavior Analysis, Chicago, Il., May, 1977.
2. Fuqua, R. W., Heckler, J. B., Brett, B. E., & Saunders, K. A. A titration procedure for assessing student preference. Paper presented at the Fourth National Conference on Behavior Research and Technology in Higher Education, Pittsburgh, PA, September, 1977.