Subjective Vitality Scales (SVS)
Measures the state of feeling alive and alert, representing a person's available psychological and physical energy.
Scale Development & Technical Details
Scale Overview
The Subjective Vitality Scales (SVS) was developed by Richard M. Ryan & Christina M. Frederick (1997). It is designed to measure Subjective Vitality. The scale is intended for use with Adults.
Scale Structure
This instrument consists of 14 items organized into 2 factors/subscales: Individual Difference (Trait) Vitality, State Vitality.
| Factor / Subscale | Items | N |
|---|---|---|
| Individual Difference (Trait) Vitality | 1,2,3,4,5,6,7 | 7 |
| State Vitality | 8,9,10,11,12,13,14 | 7 |
Response Format
Respondents rate each item using a custom response format.
Response anchors: 1 = Not at all true, 2 = 2, 3 = 3, 4 = Somewhat true, 5 = 5, 6 = 6, 7 = Very true.
The scale includes 2 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 High internal consistency (typically alpha > .80).
Administration
The scale is self-administered and typically takes approximately 3 minutes to complete. It can be administered individually or in group settings. No special training is required for administration.