Factor Analysis of the Mystical Experience Questionnaire: A Study of Experiences Occasioned by the Hallucinogen Psilocybin

Katherine A Maclean, Jeannie-Marie S Leoutsakos, Matthew W Johnson, Roland R Griffiths, Katherine A Maclean, Jeannie-Marie S Leoutsakos, Matthew W Johnson, Roland R Griffiths

Abstract

A large body of historical evidence describes the use of hallucinogenic compounds, such as psilocybin mushrooms, for religious purposes. But few scientific studies have attempted to measure or characterize hallucinogen-occasioned spiritual experiences. The present study examined the factor structure of the Mystical Experience Questionnaire (MEQ), a self-report measure that has been used to assess the effects of hallucinogens in laboratory studies. Participants (N=1602) completed the 43-item MEQ in reference to a mystical or profound experience they had had after ingesting psilocybin. Exploratory factor analysis of the MEQ retained 30 items and revealed a 4-factor structure covering the dimensions of classic mystical experience: unity, noetic quality, sacredness (F1); positive mood (F2); transcendence of time/space (F3); and ineffability (F4). MEQ factor scores showed good internal reliability and correlated with the Hood Mysticism Scale, indicating convergent validity. Participants who endorsed having had a mystical experience on psilocybin, compared to those who did not, had significantly higher factor scores, indicating construct validity. The 4-factor structure was confirmed in a second sample (N=440) and demonstrated superior fit compared to alternative models. The results provide initial evidence of the validity, reliability, and factor structure of a 30-item scale for measuring single, hallucinogen-occasioned mystical experiences, which may be a useful tool in the scientific study of mysticism.

References

    1. Anthony Francis-Vincent, Hermans Chris AM, Sterkens Carl. A comparative study of mystical experience among Christian, Muslim, and Hindu students in Tamil, Nadu, India. Journal for the Scientific Study of Religion. 2010;49(2):264–77.
    1. Back Kurt W, Bourque Linda Brookover. Can feelings be enumerated? Behavioral Science. 1970;15(6):487–96.
    1. Baggott Matthew J, Coyle JR, Erowid Earth, Erowid Fire, Robertson Lynn C. Abnormal visual experiences in individuals with histories of hallucinogen use: A web-based questionnaire. Drug Alcohol Dependence. 2011;114(1):61–7.
    1. Baggott Matthew J, Erowid Earth, Erowid Fire, Galloway Gantt P, Mendelson John. Use patterns and self-reported effects of Salvia divinorum: An internet-based survey. Drug Alcohol Dependence. 2010;111(3):250–6.
    1. Beauregard Mario, Courtemanche Jérôme, Paquette Vincent. Brain activity in near-death experiencers during a meditative state. Resuscitation. 2009;80(9):1006–10.
    1. Bentler Peter M, Bonett Douglas G. Significance tests and goodness of fit in the analysis of covariance structures. Psychological Bulletin. 1980;88(3):588–606.
    1. Birnbaum Michael H. Human research and data collection via the Internet. Annual Review of Psychology. 2004;55(1):803–32.
    1. Browne Michael W, Cudeck Robert. Alternative ways of assessing model fit. Sociological Methods and Research. 1992;21(2):230–258.
    1. Bunch Kevin Sean. PhD diss. Alliant International University; 2009. Psilocybin and spiritual experience.
    1. Caird Dale. The structure of Hood’s mysticism scale: A factor-analytic study. Journal for the Scientific Study of Religion. 1988;27(1):122–27.
    1. Caird Dale, Hood Ralph W, Yang Lijun, Watson PJ. Mystical experience among Tibetan Buddhists: The common core thesis revisited. Journal for the Scientific Study of Religion. 2011;50(2):328–38.
    1. Chen Zhuo, Qi Wen, Hood Ralph W, Watson PJ. Common core thesis and qualitative and quantitative analysis of mysticism in Chinese Buddhist monks and nuns. Journal for the Scientific Study of Religion. 2011;50(4):654–70.
    1. Chen Zhuo, Zhang Yang, Hood Ralph W, Watson PJ. Mysticism in Chinese Christians and non-Christians: Measurement invariance of the mysticism scale and implications for mean differences. International Journal for the Psychology of Religion. 2012;22(2):155–68.
    1. Clark Lee Anna, Watson David. Constructing validity: Basic issues in objective scale development. Psychological Assessment. 1995;7(3):309–19.
    1. Cronk Brian C, West Jamie L. Personality research on the Internet: a comparison of Web-based and traditional instruments in take-home and in-class settings. Behavior Research Methods, Instruments, and Computers. 2002;34(2):177–80.
    1. Doblin Rick. Pahnke’s “good Friday experiment”: A long-term follow-up and methodological critique. Journal of Transpersonal Psychology. 1991;23(1):1–28.
    1. Ganassali Stéphane. The influence of the design of Web survey questionnaires on the quality of responses. Survey Research Methods. 2008;2(1):21–32.
    1. Gosling Samuel D, Vazire Simine, Srivastava Sanjay, John Oliver P. Should we trust Web-based studies? A comparative analysis of six preconceptions about Internet questionnaires. American Psychologist. 2004;59(2):93–104.
    1. Griffiths Roland R, Johnson Matthew W, Richards William A, Richards Brian R, McCann Una D, Jesse Robert. Psilocybin occasioned mystical-type experiences: immediate and persisting dose-related effects. Psychopharmacology. 2011;218(4):649–65.
    1. Griffiths Roland R, Richards William A, Johnson Matthew W, McCann Una D, Jesse Robert. Mystical-type experiences occasioned by psilocybin mediate the attribution of personal meaning and spiritual significance 14 months later. Journal of Psychopharmacology. 2008;22(6):621–32.
    1. Griffiths Roland R, Richards William A, McCann Una, Jesse Robert. Psilocybin can occasion mystical-type experiences having substantial and sustained personal meaning and spiritual significance. Psychopharmacology. 2006;187(3):268–83.
    1. Guzmán Gastón. Hallucinogenic mushrooms in Mexico: An overview. Economic Botany. 2008;62(3):404–12.
    1. Hayton James C, Allen David G, Scarpello Vida. Factor retention decisions in exploratory factor analysis: A tutorial on parallel analysis. Organizational Research Methods. 2004;7(2):191–205.
    1. Hood Ralph W. The construction and preliminary validation of a measure of reported mystical experience. Journal for the Scientific Study of Religion. 1975;14(1):29–41.
    1. Hood Ralph W. Eliciting mystical states of consciousness with semistructured nature experiences. Journal for the Scientific Study of Religion. 1977;16(2):155–63.
    1. Hood Ralph W. Review of Cleansing the doors of perception: The religious significance of entheogenic plants and chemicals by Huston Smith. International Journal for the Psychology of Religion. 2001;11(4):285–286.
    1. Hood Ralph W. Conceptual and empirical consequences of the unity thesis. In: Belzen Jacob A, Geels Antoon., editors. Mysticism: A variety of psychological perspectives. New York: Rodopi; 2003. pp. 17–54.
    1. Hood Ralph W, Ghorbani Nima, Watson PJ, Ghramaleki Ahad Framarz, Bing Mark N, Kristi Davison H, Morris Ronald J, Paul Williamson W. Dimensions of the mysticism scale: Confirming the three-factor structure in the United States and Iran. Journal for the Scientific Study of Religion. 2001;40(4):691–705.
    1. Hood Ralph W, Hill Peter C, Spilka Bernard. The psychology of religion: An empirical approach. 4. New York: Guilford Press; 2009.
    1. Hood Ralph W, Morris Ronald J, Watson PJ. Quasi-experimental elicitation of differential report of religious experience among intrinsic and indiscriminately pro-religious types. Journal for the Scientific Study of Religion. 1990;29(2):164–72.
    1. Hood Ralph W, Morris Ronald J, Watson PJ. Further factor analysis of Hood’s mysticism scale. Psychological Reports. 1993;73(2):1176–78.
    1. Hood Ralph W, Paul Williamson W. An empirical test of the unity thesis: the structure of mystical descriptors in various faith samples. Journal of Psychology and Christianity. 2000;19(3):232–44.
    1. Hu Litze, Bentler Peter M. Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling. 1999;6(1):1–55.
    1. James William. The varieties of religious experience: A study in human nature. New York: Random House; 2002[1902].
    1. Jöreskog Karl G. On the estimation of polychoric correlations and their asymptotic covariance matrix. Psychometrika. 1994;59(3):381–9.
    1. Lazar Aryeh, Kravetz Shlomo. Responses to the mystical scale by religious Jewish persons: A comparison of structural models of mystical experience. International Journal for the Psychology of Religion. 2005;15(1):51–61.
    1. MacLean Katherine A, Johnson Matthew W, Griffiths Roland R. Mystical experiences occasioned by the hallucinogen psilocybin lead to increases in the personality domain of openness. Journal of Psychopharmacology. 2011;25(11):1453–61.
    1. Marler Penny Long, Kirk Hadaway C. “Being religious” or “being spiritual” in America: A zero-sum proposition. Journal for the Scientific Study of Religion. 2002;41(2):289–300.
    1. Metzner Ralph. Teonanacatl: Sacred mushroom of visions. El Verano, CA: Four Trees Press; 2004. with Diane Conn Darling.
    1. Miller William R. The phenomenon of quantum change. Journal of Clinical Psychology. 2004;60(5):453–60.
    1. Móró Levente, Simon Katalin, Bárd Imre, Racz József. Voice of the psychonauts: Coping, life purpose, and spirituality in psychedelic drug users. Journal of Psychoactive Drugs. 2011;43(3):188–98.
    1. Muthén Bengt O, du Toit Stephen HC, Spisic Damir. Robust inference using weighted least squares and quadratic estimating equations in latent variable modeling with categorical and continuous outcomes. Unpublished technical report. 1997 available at .
    1. Pahnke Walter Norman. Drugs and mysticism: An analysis of the relationship between psychedelic drugs and the mystical consciousness. Cambridge, MA: Harvard University Press; 1963.
    1. Pahnke Walter Norman. Psychedelic drugs and mystical experience. International Psychiatry Clinics. 1969;5(4):149–62.
    1. Pargament Kenneth I. The psychology of religion and spirituality? Yes and no. International Journal for the Psychology of Religion. 1999;9(1):3–16.
    1. Pavot William, Diener Ed. Review of the satisfaction with life scale. Psychological Assessment. 1993;5(2):164–72.
    1. Reinert Duane F, Stifler Kenneth R. Hood’s mysticism scale revisited: A factor-analytic replication. Journal for the Scientific Study of Religion. 1993;32(4):383–8.
    1. Reips Ulf-Dietrich. Standards for Internet-based experimenting. Experimental Psychology. 2002;49(4):243–56.
    1. Richards William Alan. PhD diss. UCLA; 1975. Counseling, peak experiences and the human encounter with death: An empirical study of the efficacy of DPT-assisted counseling in enhancing quality of life of persons with termincal cancer and their closest family members.
    1. Richards William Alan, Rhead John C, DiLeo Francesco B, Yensen Richard, Kurland Albert A. The peak experience variable in DPT-assisted psychotherapy with cancer patients. Journal of Psychoactive Drugs. 1977;9(1):1–10.
    1. Roof Wade Clark. A generation of seekers: The spiritual journeys of the baby boom generation. San Francisco, CA: Harper; 1993.
    1. SAMHSA (Substance Abuse and Mental Health Services Administration) The National Survey on Drug Use and Health Report 2009–2010: Table 1.88B, Specific Hallucinogen, Inhalant, Needle, and Heroin Use in Lifetime, by Age Group: Percentages, 2009 and 2010. Rockville, MD: Substance Abuse and Mental Health Services Administration, Center for Behavioral Health Statistics and Quality; 2010. Available at .
    1. Stace Walter Terence. Mysticism and philosophy. New York: The MacMillan Press; 1960.
    1. Stamets Paul. Psilocybin mushrooms of the world: An identification guide. Berkeley, CA: Ten Speed Press; 1996.
    1. Studerus Erich, Gamma Alex, Vollenweider Franz X. Psychometric evaluation of the altered states of consciousness rating scale (OAV) PLoS One. 2010;5(8):1–19.
    1. Turek IS, Soskin Robert A, Kurland Albert A. Methylenedioxyamphetamine (MDA) subjective effects. Journal of Psychoactive Drugs. 1974;6(1):7–14.
    1. van der Lans Jan. The value of Sundén’s role-theory demonstrated and tested with respect to religious experiences in meditation. Journal for the Scientific Study of Religion. 1987;26(3):401–12.
    1. van der Lans Jan. Religion as a meaning system: A conceptual model for research and counseling. In: Grzymała-Moszczynska H, Beit-Hallahmi Benjamin, editors. Religion, Psychopathology and Coping. Amsterdam: Rodopi; 1996. pp. 95–105.
    1. Wasson Robert Gordon. The wondrous mushroom: Mycolatry in Mesoamerica. New York: McGraw-Hill; 1980.
    1. Yamane David, Polzer Megan. Ways of seeing ecstasy in modern society: experimental-expressive and cultural-linguistic views. Sociology of Religion. 1994;55(1):1–25.
    1. Zinnbauer Brian J, Pargament Kenneth I, Cole Brenda, Rye Mark S, Butter Eric M, Belvich Timothy G, Hipp Kathleen M, Scott Allie B, Kadar Jill L. Religion and spirituality: Unfuzzying the fuzzy. Journal for the Scientific Study of Religion. 1997;36(4):549–64.

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