Moore, J. E., McFall, M. E., Kivlahan, D. R., & Capestany, F. (1988). Risk of misinterpretation of MMPI Schizophrenia scale elevations in chronic pain patients. Pain, 32(2), 207–213. http://www.elsevier.com/inca/publications/store/5/0/6/0/8/3/