@misc{indiciae82e84caea29e,
  title = {Task difficulty and drive in verbal learning.},
  author = {R R STANDISH and R A CHAMPION},
  year = {1960},
  doi = {10.1037/h0043398},
  url = {https://pubmed.ncbi.nlm.nih.gov/13833750/},
  note = {Source identifier: 13833750}
}