Inventory of Religious Concepts (IRC)
Measures religious beliefs and concepts across multiple dimensions of Christian theology and practice to assess their role in an individual's philosophy of life.
Scale Development & Technical Details
Scale Overview
The Inventory of Religious Concepts (IRC) was developed by Harold B. Dunkel (1947). It is designed to measure Religious beliefs and concepts. The scale is intended for use with College students.
Scale Structure
This instrument consists of 79 items organized into 6 factors/subscales: Hebrew-Christian Conceptions of God, Attitudes toward God (Theism and Nontheism), Nontraditional Expressions of Religious Values, Historic Christian Doctrines and Practices, Attitudes toward the Bible, Support of the Church.
| Factor / Subscale | Items | N |
|---|---|---|
| Hebrew-Christian Conceptions of God | 1,2,3,4,5,6,7,8,9,10 | 10 |
| Attitudes toward God (Theism and Nontheism) | 11,12,13,14,15,16,17,18,19,20 | 10 |
| Nontraditional Expressions of Religious Values | 21,22,23,24,25,26,27,28,29,30 | 10 |
| Historic Christian Doctrines and Practices | 31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50 | 20 |
| Attitudes toward the Bible | 51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70 | 20 |
| Support of the Church | 71,72,73,74,75,76,77,78,79 | 9 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: x = Agree, y = Disagree, n = No opinion, u = Uncertain.
The scale includes 25 reverse-scored items to reduce acquiescence bias.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of KR-21 coefficients range from .44 to .86 across subscales.
Administration
The scale is self-administered and typically takes approximately 25 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.