@misc{indiciaeb5a5f390f99d,
  title = {Conditional and biconditional rule difficulty under selection and reception conditions.},
  author = {C R Sawyer and P J Johnson},
  year = {1971},
  doi = {10.1037/h0031251},
  url = {https://pubmed.ncbi.nlm.nih.gov/5567149/},
  note = {Source identifier: 5567149}
}