@misc{indiciaef99da2e5ea48,
  title = {Locating the difficulty in insight problems: individual and sex differences.},
  author = {N R Maier and G G Casselman},
  year = {1970},
  doi = {10.2466/pr0.1970.26.1.103},
  url = {https://pubmed.ncbi.nlm.nih.gov/5452584/},
  note = {Source identifier: 5452584}
}