Media type: E-Article Title: A Temporal Gradient of Derived Reinforcement Contributor: Jenkins, William O. Published: University of Illinois Press, 1950 Published in: The American Journal of Psychology, 63 (1950) 2, Seite 237 Language: Not determined DOI: 10.2307/1418927 ISSN: 0002-9556 Keywords: Arts and Humanities (miscellaneous) ; Developmental and Educational Psychology ; Experimental and Cognitive Psychology Origination: Footnote: