Happiness measure, code: O-SLW-u-sq-v-4-a

Selfreport on single question:

On the whole, are you satisfied with life.....?
4 definitively yes
3 rather yes
2 don't know
1 definitively no
- no reply
Focus, O-SLW Overall: Satisfaction w Life as a Whole
Time frame, u time unspecified
Mode, sq 1 question
Scale type, v verbal scale Range = 4
Used in studies