MacCORQUODALE, K On the elimination of cul entries without obvious reinforcement. [electronic resource] - Journal of comparative and physiological psychology Aug 1951 - 367-71 p. digital Publication Type: Journal Article ISSN: 0021-9940 Standard No.: 10.1037/h0061326 doi Subjects--Topical Terms: HumansMaze LearningReinforcement, Psychology