@misc{indiciae5a246d4c58b3, title = {Probability learning as a function of momentary reinforcement probability.}, author = {B A Williams}, year = {1972}, doi = {10.1901/jeab.1972.17-363}, url = {https://pubmed.ncbi.nlm.nih.gov/16811592/}, note = {Source identifier: 16811592} }