Spirituality Index of Well-Being (SIWB)

Abstract

The Spirituality Index of Well-Being (SIWB) is a concise, 12-item psychometric instrument designed to measure an individual’s perception of their spiritual quality of life. Developed by Frey, Daaleman, and Peyton (2005), the scale defines spirituality as deriving a sense of meaning or purpose from a transcendent source, distinct from traditional religious affiliation. The SIWB is structured into two primary subscales: the Self-Efficacy Subscale and the Life-Scheme Subscale. Responses are captured using a 5-point Likert scale, ranging from 1 (Strongly Agree) to 5 (Strongly Disagree), providing a continuous measure of spiritual well-being.

Keywords

Spirituality Index of Well-Being, SIWB, Spiritual Quality of Life, Self-Efficacy, Life Scheme, Well-Being, Psychometrics, Health-Related Quality of Life, Spiritual Health.

Authors

Bruce B. Frey, Timothy P. Daaleman, Vichki Peyton.

Purpose

The primary purpose of the SIWB is to provide a brief, reliable, and valid measure for quantifying spiritual health within clinical and research contexts, particularly those related to Health-Related Quality of Life (HRQoL) studies. It was specifically developed to assess the spiritual dimension of well-being among diverse populations, including geriatric outpatients and primary care patients.

By focusing on spiritual self-efficacy and the presence of life purpose, the instrument allows researchers to explore how these fundamental spiritual components correlate with physical health status, mental health outcomes, and overall subjective well-being. The scale fills a need for instruments that measure spirituality conceptually rather than solely through religious practices.

Construct

The SIWB measures a bi-dimensional construct of spiritual quality of life, conceptualized as an individual’s connection to a transcendent source of meaning. This construct is operationalized through two distinct subscales:

• Self-Efficacy Subscale: This dimension focuses on the individual’s perceived ability to cope with life’s difficulties and problems. It measures the extent to which one feels capable, effective, and in control regarding personal challenges, reflecting the internal, resource-based aspect of self-efficacy derived from spiritual strength.
• Life-Scheme Subscale: This dimension addresses existential concerns, measuring the degree to which an individual has found meaning, purpose, and direction in life. It evaluates clarity regarding one’s identity, origin, and future path, reflecting the external or transcendent aspect of spiritual fulfillment.

Validity

The development of the SIWB, as detailed in foundational papers by Daaleman and Frey, emphasized rigorous assessment of its validity, ensuring it adequately captures the intended construct of spiritual well-being distinct from religiosity. Initial testing provided evidence for strong construct validity, demonstrating that the two subscales were related but conceptually separable factors.

The scale’s validity is supported by its appropriate correlations with other measures of quality of life and health status, confirming its utility in medical and psychological research. The factor structure consistently supports the theoretical model of two components—Self-Efficacy and Life-Scheme—which are crucial dimensions of the spiritual construct being measured.

Reliability

The SIWB exhibits excellent internal consistency reliability, calculated using Cronbach’s alpha across multiple samples. These high coefficients confirm that the items within the scale are highly correlated and reliably measure the underlying constructs.

The internal consistency reliability statistics reported by the authors (Frey, Daaleman, & Peyton, 2005) are:

• Self-Efficacy Subscale: Alpha coefficients ranged from 0.83 to 0.86.
• Life-Scheme Subscale: Alpha coefficients ranged from 0.80 to 0.89.
• Total Scale: The overall SIWB demonstrated high internal consistency, with total alpha values ranging from 0.87 to 0.91.

Factor Analysis

The factorial structure of the SIWB was established through factor analysis, which confirmed the existence of two distinct factors underlying the 12 items. This analysis validated the theoretical division of the scale into the Self-Efficacy Subscale (Items 1-6) and the Life-Scheme Subscale (Items 7-12).

The successful extraction of these two factors supports the measure’s conceptualization that spiritual well-being is composed of both personal agency (self-efficacy in the face of problems) and existential clarity (meaning and purpose). This clear factor structure enhances the interpretability and utility of the SIWB in research settings.

Instrument

Test Type: Self-report inventory based on subjective perceptions of spiritual quality of life.

Format: 12 items administered via a 5-point Likert scale (1=Strongly Agree, 5=Strongly Disagree). Scoring is maintained on a continuous basis.

Language Available: Primary development and testing in English.

Population Group: General adult population, frequently utilized in health research.

Age Group: Adult (specific use noted in geriatric populations).

Population Details: Has been validated and applied extensively in primary care settings and studies involving geriatric outpatients, focusing on the patient’s perspective of spiritual health.

Test Methodology: The scale is typically self-administered. Raw scores are summed and kept on a continuous basis to reflect the level of spiritual well-being.

Keywords

Spiritual Health, Quality of Life, Self-Efficacy Subscale, Life Scheme Subscale, Geriatrics, Existential Meaning, Psychometrics, Cronbach’s alpha.

Authors

Author ORCID Identifier: N/A

Affiliation Email addresses: N/A

Correspondence Address: N/A

Permissions & Fee and Test Year

Test Year: 2005 (Based on the definitive publication in Research on Aging).

Permissions and Fee: Researchers should contact the primary authors, Bruce B. Frey or Timothy P. Daaleman, for permission regarding commercial or large-scale use. The original paper detailing the measure’s validity can be downloaded here: http://people.ku.edu/~bfrey/SIWBpaper.pdf

Reference’s

Daaleman, Timothy P., A. K. Cobb, and Bruce B. Frey. 2001. “Spirituality and Well-Being: An Exploratory Study of the Patient Perspective.” Social Science and Medicine 53:119-27.

Daaleman, Timothy P., Bruce B. Frey, Dennis Wallace, and Stephanie A. Studenski. 2002. “The Spirituality Index of Well-Being: Development and Testing of a New Measure.” Journal of Family Practice 51:952.

Daaleman, Timothy P. and Bruce B. Frey. 2004. “The Spirituality Index of Well-Being: A New Instrument for Health-Related Quality of Life Research.” Annals of Family Medicine 2 (5): 499-503.

Daaleman, Timothy P., S. Perera, and Stephanie A. Studenski. 2004. “Religion, Spirituality, and Health Status in Geriatric Outpatients.” Annals of Family Medicine 2:49-53.

Daaleman, T. P. & Frey, B. B. (2004). The Spirituality Index of Well-Being: A new instrument for health-related quality of life research. Annals of Family Medicine, 2, 499-503.

Frey, B. B., Daaleman, T. P., & Peyton, V. (2005). Measuring a dimension of spirituality for health research: Validity of the Spirituality Index of Well-Being. Research on Aging, 27, 556-577.

Hill, P. C. & Pargament, K. I. (2003) Advances in the conceptualization and measurement of religion and spirituality. American Psychologist, 58, 64-74.

Additional reference link: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1466734/#r12

Items of the Spirituality Index of Well-Being (SIWB)

Instructions: Which response best describes how you feel about each statement?

Response Options: Strongly Agree, Agree, neither Agree nor Disagree, Disagree, Strongly Disagree

1. There is not much I can do to help myself. (Self-Efficacy)
2. Often, there is no way I can complete what I have started. (Self-Efficacy)
3. I can’t begin to understand my problems. (Self-Efficacy)
4. I am overwhelmed when I have personal difficulties and problems. (Self-Efficacy)
5. I don’t know how to begin to solve my problems. (Self-Efficacy)
6. There is not much I can do to make a difference in my life. (Self-Efficacy)
7. I haven’t found my life’s purpose yet. (Life-Scheme)
8. I don’t know who I am, where I came from, or where I am going. (Life-Scheme)
9. I have a lack of purpose in my life. (Life-Scheme)
10. In this world, I don’t know where I fit in. (Life-Scheme)
11. I am far from understanding the meaning of life. (Life-Scheme)
12. There is a great void in my life at this time. (Life-Scheme)