Happiness measure, code: M-TH-cy-sq-v-4-c

Selfreport on single question:

Please tell me how much of the time during the past week...?
.. You were happy...
1 none or almost none of the time
2 some of the time
3 most of the time
4 all or almost most of the time

Item in CES-D (Center for Epidemiologic Studies of Depression) Scale. Score reversed.
Focus, M-TH Mixed: Time Happy
Time frame, cy last year
Mode, sq 1 question
Scale type, v verbal scale Range = 4
Used in studies