1. Armentrout, D., Moore, J., Parker, J., Hewett, J., and Feltz, C. (1982). Pain-patient MMPI subgroups: The psychological dimensions of pain.J. Behav. Med. 5: 201?211.
2. Blumetti, A. E., and Modesti, L. M. (1976). Psychological predictors of success or failure of surgical intervention for intractable back pain. In Bonica, J. J., and Albe-Fessard, D. (eds.),Advances in Pain Research and Therapy, Vol. 1, Raven Press, New York.
3. Fordyce, W. E. (1979). Use of the MMPI in the assessment of chronic pain. In Butcher, J., Dahlstrom, G., Gynther, M., and Schofield, W. (eds.),Clinical Notes on the MMPI, Hoffman-LaRoche, New York.
4. Hallett, E. C., and Pilowsky, I. (1982). The response to treatment in a multidisciplinary pain pain clinic.Pain 12: 265?374.
5. Helwig, J., and Council K. (1979).SAS User's Guide, 1979 Edition, SAS Institute, Cary, N.C.