Description

The Index of Core Spiritual Experiences (INSPIRIT) is a well-established psychometric instrument developed to assess the frequency and intensity of individuals’ core spiritual experiences. Unlike measures that primarily evaluate religious beliefs or participation in organized religious practices, the INSPIRIT focuses on the personal experience of spirituality, including feelings of connection with the Divine, experiences of sacred presence, and transcendent or mystical experiences. It is widely used in psychology, behavioral medicine, spirituality research, and health sciences to examine the role of spirituality in psychological well-being and overall quality of life.

The questionnaire evaluates several fundamental aspects of spirituality, including:

  • Sense of Connection with the Divine – perceptions of a personal relationship or connection with God, a higher power, or a transcendent reality.
  • Experience of Sacred Presence – awareness of sacredness or divine presence during everyday life or significant life events.
  • Transcendent and Mystical Experiences – experiences that extend beyond ordinary perception and are interpreted as spiritually meaningful.
  • Spiritual Awareness – recognition of spiritual dimensions within oneself, others, and the surrounding world.
  • Personal Spiritual Growth – perceived influence of spiritual experiences on personal development, meaning, and purpose in life.

The INSPIRIT is based on the premise that spiritual experiences represent a distinct dimension of human functioning that may influence coping, resilience, emotional well-being, interpersonal relationships, and health outcomes.

Analysis and Use of Data

The INSPIRIT provides researchers and clinicians with quantitative measures of spiritual experiences and their relationship with psychological, physical, and social outcomes.

Statistical analyses commonly include:

  • Descriptive statistics (means, standard deviations, medians, frequencies, and percentile distributions).
  • Reliability assessment using Cronbach’s alpha and McDonald’s Omega.
  • Construct validity evaluation through Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA).
  • Assessment of convergent and discriminant validity using measures of religiosity, spirituality, life satisfaction, resilience, coping, psychological well-being, anxiety, and depression.
  • Correlation analyses using Pearson’s or Spearman’s correlation coefficients.
  • Group comparisons using independent-samples t-tests, ANOVA, MANOVA, or appropriate non-parametric tests.
  • Multiple regression analyses to identify predictors of spiritual experiences and their contribution to health-related outcomes.
  • Mediation, moderation, and Structural Equation Modeling (SEM) to investigate theoretical relationships among spirituality, coping, and mental health.
  • Cross-cultural validation studies examining measurement invariance across religious traditions and cultural populations.

The INSPIRIT is widely used in:

  • Psychology of religion
  • Health psychology
  • Clinical psychology
  • Behavioral medicine
  • Nursing and palliative care
  • Public health research
  • Positive psychology
  • Spirituality and quality-of-life research

Objective

The primary objective of the INSPIRIT is to provide a reliable and valid assessment of individuals’ core spiritual experiences and their perceived relationship with psychological functioning, health, and personal well-being. The questionnaire facilitates scientific investigation of spirituality as a multidimensional construct while supporting research on resilience, coping, meaning in life, and holistic health.

More specifically, the questionnaire aims to:

  • Assess the frequency and intensity of spiritual experiences.
  • Evaluate individuals’ perceived connection with the Divine or sacred reality.
  • Measure transcendent and mystical experiences.
  • Investigate the relationship between spirituality and psychological well-being.
  • Examine spirituality as a coping resource during stressful life events.
  • Support research on spiritual growth, resilience, and health-related quality of life.
  • Facilitate evidence-based clinical and behavioral health research.

Scoring

The INSPIRIT consists of a series of items assessing various aspects of spiritual experience. Participants typically respond using Likert-type rating scales, with response options reflecting the frequency or intensity of their experiences. Depending on the questionnaire version, responses generally range from 1 (Never) to 5 (Very Often).

Scores are calculated by summing or averaging responses across items to produce an overall spirituality score and, where applicable, scores for specific dimensions of spiritual experience. Higher scores indicate more frequent, intense, or personally significant spiritual experiences. Interpretation should follow the scoring guidelines established for the specific version of the instrument.

Psychometric evaluation of the INSPIRIT commonly includes:

  • Internal consistency reliability (Cronbach’s alpha and McDonald’s Omega)
  • Test–retest reliability
  • Construct validity
  • Convergent and discriminant validity
  • Factorial validity using Confirmatory Factor Analysis (CFA)
  • Measurement invariance across religious affiliations, cultures, and demographic groups
  • Item analysis and corrected item–total correlations

Higher scores generally reflect greater spiritual awareness, stronger perceived connection with the Divine or sacred reality, and more frequent transcendent experiences, which have been associated in numerous studies with enhanced psychological well-being, resilience, adaptive coping, and overall quality of life.

References

Hill, P. C., & Hood, R. W. Jr. (1999). Measures of Religiosity. Religious Education Press.

Kass, J. D., Friedman, R., Leserman, J., Zuttermeister, P. C., & Benson, H. (1991). Health outcomes and a new index of spiritual experience. Journal for the Scientific Study of Religion, 30(2), 203–211. https://doi.org/10.2307/1387214

Koenig, H. G., King, D. E., & Carson, V. B. (2012). Handbook of Religion and Health (2nd ed.). Oxford University Press.

Pargament, K. I. (1997). The Psychology of Religion and Coping: Theory, Research, Practice. Guilford Press.

Park, C. L. (2013). Religion and meaning. In R. F. Paloutzian & C. L. Park (Eds.), Handbook of the Psychology of Religion and Spirituality (2nd ed., pp. 357–379). Guilford Press.

Underwood, L. G., & Teresi, J. A. (2002). The Daily Spiritual Experience Scale: Development, theoretical description, reliability, exploratory factor analysis, and preliminary construct validity using health-related data. Annals of Behavioral Medicine, 24(1), 22–33.