Purpose of the Questionnaire

The purpose of the [SBI-15R] is to assess and measure beliefs and practices related to religiosity and spirituality. At the same time, it aims to evaluate the social support that results from these beliefs.

Questionnaire Analysis

The [SBI-15R] questionnaire was developed by Holland, Kash, Gronert, Sison, Lederberg, Russak, Baider, and Fox in 1995. It consists of 15 statement-questions and is the short version of the [SBI-54]. It is a fact that this particular questionnaire emerged from factor analyses of the extended version. Regarding the subscales of the [SBI-15R], there are two, which are distinguished as follows:
Beliefs and practices related to religiosity and spirituality
Social support received from the religious group to which an individual belongs.
Scoring and Statistical Analysis
The 15 statement-questions of the [SBI-15R] are presented as a whole, and the responses to each are given on a four-point Likert scale, depending on how much they reflect the respondent’s experience. The scale ranges from “strongly disagree” or “not at all/never” to “strongly agree” or “always.” After completing the questionnaire, two scores are calculated, which result from the sum of each subscale of the questionnaire. Specifically, the score for the first subscale—religiosity and spirituality—is calculated by summing the scores of items 1, 2, 4, 6, 8, 10, 11, 12, 14, and 15. The score for the second subscale—social support from the religious group—is calculated by summing items 3, 5, 7, 9, and 13. Finally, the total score of the questionnaire, which ranges from 0 to 45, is derived from the sum of the scores of the two subscales. The higher the total score, the greater the individual’s religiosity.

Validity and Reliability

The internal consistency index is high for the [SBI-15R], with a value of 0.93. High internal consistency indices are also found for both subscales: the subscale of beliefs and practices related to religiosity and spirituality has a Cronbach’s alpha of 0.92, while the subscale concerning social support from a religious group has a Cronbach’s alpha of 0.89.

References

Baider, L., Holland, J. C., Russak, S. M., & Kaplan De‐Nour, A. (2001). The system of belief inventory (SBI‐15): a validation study in Israel. Psycho‐Oncology: Journal of the Psychological, Social and Behavioral Dimensions of Cancer, 10(6), 534-540.
Gallegos, W. L. A., Loayza, A. E., Rivera, R., & Cohello, A. L. N. (2021). Modified and Validated Version of the System of Beliefs Inventory (SBI-15R) in a Sample of Inhabitants from Arequipa City (Peru). International Journal of Latin American Religions, 5(2), 501-518.
Grulke, N., Bailer, H., Blaser, G., Geyer, M., Brähler, E., & Albani, C. (2003). Measuring religious attitudes: Reliability and validity of the German version of the Systems of Belief Inventory (SBI-15R-D) in a representative sample. Mental Health, Religion & Culture, 6(3), 203-213.
Holland, J. C., Kash, K. M., Passik, S., Gronert, M. K., Sison, A., Lederberg, M., … & Fox, B. (1998). A brief spiritual beliefs inventory for use in quality of life research in life‐threatening illness. Psycho‐Oncology: Journal of the Psychological, Social and Behavioral Dimensions of Cancer, 7(6), 460-469.
Holland, J. C., Passik, S., Kash, K. M., Russak, S. M., Gronert, M. K., Sison, A., … & Baider, L. (1999). The role of religious and spiritual beliefs in coping with malignant melanoma. Psycho‐Oncology: Journal of the Psychological, Social and Behavioral Dimensions of Cancer, 8(1), 14-26.
Kash, K. M., Holland, J. C., Passik, S. D., Lederberg, M. S., Sison, A. C., & Gronert, M. K. (1995, January). The Systems of Belief Inventory (SBI)-A scale to measure spiritual and religious beliefs in quality-of-life and coping research. In Psychosomatic medicine (Vol. 57, No. 1, pp. 62-62). 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436: WILLIAMS & WILKINS.