@misc{indiciae79eeabdcd68b,
  title = {Cognitive abilities as process variables.},
  author = {J Hettema},
  year = {1968},
  doi = {10.1037/h0026826},
  url = {https://pubmed.ncbi.nlm.nih.gov/5708048/},
  note = {Source identifier: 5708048}
}