@misc{indiciaec640dc3a4fdd,
  title = {Intervening variable or hypothetical construct?},
  author = {M H MARX},
  year = {1951},
  doi = {10.1037/h0054854},
  url = {https://pubmed.ncbi.nlm.nih.gov/14864761/},
  note = {Source identifier: 14864761}
}