1. DEMARSE, T. B., & URCUIOLL, P. J. (1993). Enhancement of matching acquisition by differential comparison-outcome associations. Journal of Experimental Psychology: Animal Behavior Processes, 19, 317–326.
2. GOETERS, S., BLAKELY, E., & POLING, A. (1992). The differential outcomes effect. The Psychological Record, 42, 389–411.
3. HOLLAND, P. C. (1983). Occasion setting in Pavlovian feature positive discriminations. In M. L. Commons, R. J. Herrnstein, & A. R. Wagner (Eds.), Quantitative analyses of behavior, Vol. 4: Discrimination processes (pp. 183–206). New York: Ballinger.
4. HOLLAND, P. C. (1985). The nature of conditioned inhibition in serial and simultaneous feature negative discriminations. In R. R. Miller & N. R. Spear (Eds.), Information processing in animals: Conditioned inhibition (pp. 267–297). Hillsdale, NJ: Erlbaum.
5. HOLLAND, P. C. (1991). Transfer of control in ambiguous discriminations. Journal of Experimental Psychology: Animal Behavior Processes, 17, 231–248.