@misc{indiciae1f23b768c145,
  title = {Sequential development of cognitive complexity.},
  author = {N A Vacc and W Greenleaf},
  year = {1975},
  doi = {10.2466/pms.1975.41.1.319},
  url = {https://pubmed.ncbi.nlm.nih.gov/1178425/},
  note = {Source identifier: 1178425}
}