There is evidence that preference for a given therapy may influence results. Literature also suggests that hypnotizability may be elevated in agoraphobic patients, making hypnosis a potentially powerful method for treatment. Agoraphobic patients (N = 64) were treated with either exposure in vivo or exposure combined with hypnosis in a crossover design. Half of the patients started with the treatment they preferred and the other half received the other treatnent first. Although patients' preference clearly shifted in favor of the combined therapy in the course of the study, no effect of preference on outcome was evident. Although hypnotizability clearly correlated to outcome in the combined therapy, no difference in effect between the two therapies was found on behavioral, self-report, and observer measures. No additional effect of hypnosis could be shown and preference was not found to be a powerful mediator of effect.
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References
1.
Andrews, G. (1990). The diagnosis and management of pathological anxiety. Medical Journal of Australia, 152, 656-659.
2.
Arrindell, W. A. , Emmelkamp, P.M.G., & Ende, J.v.d. (1985). Phobic dimensions: I. Reliability and generalizability across samples, gender, and nations. The Fear Survey schedule and the Fear Questionnaire. Advances in Behaviour Research and Therapy, 6, 207-254.
3.
Cattell, R. B. (1966). The scree test for the number of factors. Multivariate Behavioral Research, 1, 245-276.
4.
Clark, D. M. (1986). A cognitive approach to panic. Behaviour Research and Therapy, 24, 461-470.
5.
Clarke, J. C. , & Jackson, J. A. (1983). Hypnosis and behavior therapy. New York: Springer.
6.
Cronbach, L. J. , & Furby, L. (1970). How we should measure "change"-or should we?Psychological Bulletin, 74, 68-80.
7.
Crowe, M. J. , Marks, I. M., Agras, W. S., & Leitenberg, H. (1972). Time limited desensitization, implosion, and shaping for phobic patients: A crossover study. Behaviour Research and Therapy, 10, 319-328.
8.
Devine, D. A. , & Femals, P. S. (1973). Outcome effects on receiving a preferred, randomly assigned, or nonpreferred therapy. Journal of Consulting and Clinical Psychology, 41, 104-107.
9.
Dijkstra, P. (1974). De Zelfbeoordelingsschaal voor depressie van Zung [Zung's self-rating scale for depression]. In H. v. Praag & H.G.M. Rooijmans (Eds.), Stemming en ontstemming (pp. 98-120). Amsterdam: Bohn.
10.
DiNardo, P. A. , & Barlow, D. H. (1988). Anxiety Disorders Interview Schedule-Revised. Albany: Phobia and Anxiety Disorders Clinic, State University of New York.
11.
Dyck, R. V. (1986) Psychotherapie, placebo en suggestie [Psychotherapy, placebo, and suggestion]. Unpublished doctoral thesis, Leiden University, The Netherlands.
12.
Dyck, R. V. (1988). Future oriented hypnotic imagery: Description of a method. Hypnos, 15, 60-67.
13.
Emmelkamp, P.M.G. (1982). Phobicand obsessive-compulsive disorders: Theory, research, and practice. New York: Plenum.
14.
Emmelkamp, P.M.G. , Dyck, R. V., Bitter, M., Heins, R., Onstein, E. J., & Eisen, B. (1992). Spouse-aided therapy with agoraphobics. British Journal of Psychiatry, 160, 51-56.
15.
Frankel, F. H. , & Ome, M. T. (1976). Hypnotizability and phobic behavior. Archives of General Psychiatry, 33, 1259-1261.
16.
Foenander, G. , Burrows, G. D., Gerschman, J. A., & Home, J. (1980). Phobic behaviour and hypnotic susceptibility. Australian Journal of Clinical and Experimental Hypnosis, 8,41-46.
17.
Gerschman, J. A. , Burrows, G. D., & Reade, P. C. (1987). Hypnotizability and dental phobic disorder. International Journal of Psychosomatics, 34, 42-47.
18.
Gerschman,A. , Burrows, G. D., Reade, P. C., & Foenander, G. (1979). Hypnotizability and the treatment of dental phobic illness. In G. D. Burrows, G.D.R. Collison, & L. Dennerstein (Eds.), Hypnosis 1979 (pp. 33-39). New York: Elsevier.
19.
Gibbons, D. E. , Kilbourne, L., Saunders, A., & Castles, C. (1970). The cognitive control of behavior: A comparison of systematic desensitization and hypnotically induced "directed experience" techniques. American Journal of Clinical Hypnosis, 12, 141-145.
20.
Gordon, R. M. (1976). Effects of volunteering and responsibility on the perceived value and effectiveness of a clinical treatment. Journal of Consulting and Clinical Psychology, 44, 799-801.
21.
Hilgard, E. R. , & Hilgard, J. R. (1975). Hypnosis in the relief of pain. Los Altos, CA: William Kaufman.
22.
Jansson, L. , & Ost, L. G. (1982). Behavioural treatments for agoraphobia: An evaluative review. Clinical Psychology Review, 2, 311-336.
23.
John, R. , Hollander, B., & Perry, C. (1983). Hypnotizability and phobic behavior: Further supporting data. Journal of Abnormal Psychology, 92, 390-392.
24.
Kelly, S. F. (1984). Measured hypnotic response and phobic behavior. International Journal of Clinical and Experimental Hypnosis, 32, 1-5.
Marks, I. M. (1981). Cure and care of neuroses. New York: Wiley.
27.
Marks, I. M. (1987). Fears, phobias, and rituals. Oxford: Oxford University Press.
28.
Marks, I. M. , & Mathews, A. M. (1979). Brief standard self-rating forphobic patients. Behaviour Research and Therapy, 17, 263-267.
29.
Mathews, A. M. , Gelder, M., & Johnston, D. J. (1981). Agoraphobia: Nature and treatment. London: Tavistock.
30.
Mavissakalian, M. , & Michelson, L. (1986). Two-year follow-up of exposure and imipramine treatment of agoraphobia. American Journal of Psychiatry, 143, 1106-1112.
31.
Piccione, C. , Hilgard, E. R., & Zimbardo, P. G. (1989). On the degree of stability of measured hypnotizability over a 25 year period. Journal of Personality and Social Psychology, 56, 289-295.
32.
Pilkonis, P. A. , Imber, S. D., Lewis, P., & Rubinsky, P. (1984). A comparative outcome study of individual, group, and conjoint psychotherapy. Archives of General Psychiatry, 41, 431-437.
33.
Ruiter, C. d. , Rijken, H., Garssen, B., & Kraaimaat, F. (1989). Breathing retraining, exposure, and a combination of both in the treatment of panic disorder with agoraphobia. Behaviour Research and Therapy, 27, 647-655.
34.
Sheehan, P. W. , & McConkey, H. G. (1982). Hypnosis and experience. London: Lawrence Erlbaum.
35.
Spinhoven, P. (1987). Hypnosis andbehaviortherapy: Areview. IntemationalJournal of Clinical and Experimental Hypnosis, 35, 8-31.
36.
Spinhoven, P. , Dyck, R. V., Hoogduin, C.A.L., & Schaap, C. (1991). Differences in hypnotisability of Dutch psychiatric outpatients according to two different scales. Australian Journal of Clinical and Experimental Hypnosis, 19, 107-116.
37.
Stevens, J. P. (1980). Power of the multivariate analysis of variance test. Psychological Bulletin, 88, 728-737.
38.
Velden, I.v.d. , & Spinhoven, P. (1984). De Nederlandse bewerking van de Creative Imagination Scale [The Dutch validation of the Creative Imagination Scale]. DTH Kwartaalschrift voor directieve therapie en hypnose, 4, 225-253.
39.
Watson, J. P. , & Marks, I. M. (1971). Relevant and irrelevant fear in flooding: A crossover study of phobic patients. Behavior Therapy, 2, 275-293.
40.
Wilson, S. C. , & Barber, T. X. (1978). The Creative Imagination Scale as a measure of hypnotic responsiveness. American Journal of Clinical Hypnosis, 20, 235-243.
41.
Zung, W.W.K. (1965). Aself-rating depression scale. Archives of General Psychiatry, 12,63-70.
