@misc{indiciae3d8c364d7ee6, title = {External validity of laboratory fear assessment: implications from two case studies.}, author = {J R Lick and T E Unger}, year = {1975}, doi = {10.1037//0022-006x.43.6.864}, url = {https://pubmed.ncbi.nlm.nih.gov/427/}, note = {Source identifier: 427} }