Happiness measure, code: O-HL-u-sq-v-4-na

Selfreport on single question:

How well does the following statement apply to you?
I am happy
4 describes me very well
3 describes me quite well
2 does not describe me well enough
1 doesd not describe me at all
Focus, O-HL Overall: Happiness in Life
Time frame, u time unspecified
Mode, sq 1 question
Scale type, v verbal scale Range = 4
Used in studies