@misc{indiciaef1f7bf5ae8d7,
  title = {Reinforced variability and operant learning.},
  author = {A Neuringer and C Deiss and G Olson},
  year = {2000},
  doi = {10.1037//0097-7403.26.1.98},
  url = {https://pubmed.ncbi.nlm.nih.gov/10650547/},
  note = {Source identifier: 10650547}
}