@misc{indiciae2f1393ae121b,
  title = {Frustration, training, and task complexity in rats.},
  author = {W N Boyer and J D Hannig},
  year = {1980},
  doi = {10.1080/00221309.1980.9920981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7381439/},
  note = {Source identifier: 7381439}
}