Omnibus T-Scale
Measures three dimensions of faculty trust in schools: trust in the principal, trust in colleagues, and trust in clients (students and parents).
Scale Development & Technical Details
Scale Overview
The Omnibus T-Scale was developed by Wayne K. Hoy & Megan Tschannen-Moran (2003). It is designed to measure Faculty Trust. The scale is intended for use with School teachers and faculty.
Scale Structure
This instrument consists of 26 items organized into 3 factors/subscales: Faculty Trust in the Principal, Faculty Trust in Colleagues, Faculty Trust in Clients.
| Factor / Subscale | Items | N |
|---|---|---|
| Faculty Trust in the Principal | 1,4,7,9,11,15,18,23 | 8 |
| Faculty Trust in Colleagues | 2,5,8,12,13,16,19,21 | 8 |
| Faculty Trust in Clients | 3,6,10,14,17,20,22,24,25,26 | 10 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: 1 = Strongly Disagree, 2 = Disagree, 3 = Somewhat Disagree, 4 = Somewhat Agree, 5 = Agree, 6 = Strongly Agree.
The scale includes 5 reverse-scored items to reduce acquiescence bias.
Scoring
Items are scored by subscale, with each subscale sum representing a distinct dimension.
Total scores range from 200 to 800. Interpretation guidelines:
- Low Trust (Below Average): 200 – 399
- Average Trust: 400 – 600
- High Trust (Above Average): 601 – 800
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of High reliability (typically alpha > .90 for all subscales).
Administration
The scale is self-administered and typically takes approximately 10 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.