DeLeon, I. G., Gregory, M. K., Frank-Crawford, M. A., Allman, M. J., Wilke, A. E., Carreau-Webster, A. B., & Triggs, M. M. (2011). Examination of the influence of contingency on changes in reinforcer value. Journal of Applied Behavior Analysis, 44(3), 543–558. https://doi.org/10.1901/jaba.2011.44-543
