Happiness measure, code: M-AO-u-sq-v-4-a

Selfreport on single question:

"How often have you seriously thought that life wasn't really worth living.....?"
4 Never
3 Once or twice
2 Occasionally
1 A great deal
Focus, M-AO Mixed: Affect + Overall
Time frame, u time unspecified
Mode, sq 1 question
Scale type, v verbal scale Range = 4
Used in studies