Science Teaching Efficacy Belief Instrument – STEBI
Measures elementary teachers' beliefs regarding their personal efficacy in teaching science and their outcome expectancy regarding science teaching.
Scale Development & Technical Details
Scale Overview
The Science Teaching Efficacy Belief Instrument – STEBI was developed by Iris M. Riggs & Larry G. Enochs (1990). It is designed to measure Science Teaching Self-Efficacy. The scale is intended for use with Elementary School Teachers.
Scale Structure
This instrument consists of 25 items organized into 2 factors/subscales: Personal Science Teaching Efficacy (PSTE), Science Teaching Outcome Expectancy (STOE).
| Factor / Subscale | Items | N |
|---|---|---|
| Personal Science Teaching Efficacy (PSTE) | 2,3,5,6,8,12,17,18,19,21,22,23,24 | 13 |
| Science Teaching Outcome Expectancy (STOE) | 1,4,7,9,10,11,13,14,15,16,20,25 | 12 |
Response Format
Respondents rate each item using a 5-point Likert scale (1 = Strongly Disagree to 5 = Strongly Agree).
The scale includes 12 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 13 to 65. Interpretation guidelines:
- Low Personal Science Teaching Efficacy (PSTE): 13 – 38
- High Personal Science Teaching Efficacy (PSTE): 39 – 65
- Low Science Teaching Outcome Expectancy (STOE): 12 – 35
- High Science Teaching Outcome Expectancy (STOE): 36 – 60
Psychometric Properties
Internal Consistency: The scale has demonstrated good to excellent internal consistency with reported Cronbach’s alpha values of PSTE alpha = 0.90, STOE alpha = 0.76.
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.