Scale Overview
The Basic Need Satisfaction in General Scale – BNSG-S was developed by Edward L. Deci & Richard M. Ryan (2000). It is designed to measure Basic Psychological Needs (Autonomy, Competence, Relatedness). The scale is intended for use with Adults.
Scale Structure
This instrument consists of 21 items organized into 3 factors/subscales: Autonomy, Competence, Relatedness.
| Factor / Subscale |
Items |
N |
| Autonomy |
1,4,8,11,17,20 |
6 |
| Competence |
3,5,10,13,15,19 |
6 |
| Relatedness |
2,6,7,9,12,14,16,18,21 |
9 |
Response Format
Respondents rate each item using a 7-point Likert scale (1 = Strongly Disagree to 7 = Strongly Agree).
The scale includes 9 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 21 to 147. Interpretation guidelines:
- Low Need Satisfaction: 21 – 63
- Moderate Need Satisfaction: 64 – 105
- High Need Satisfaction: 106 – 147
Administration
The scale is self-administered and typically takes approximately 5 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.