Study Tweeten & Lu (1976): study US 1970
- Public
 - 18+ aged, general public, USA, 1970
 - Sample
 - Probability multi-stage cluster sample
 - Respondents
 - N = 1580
 - Non Response
 - Assessment
 - Interview: face-to-face
 
Happiness measure(s)
- Full text:
 - 
            Self report on single question:
In general how satisfying do you find the way you are spending your life these days. Would you call it.....?
3 completely satisfying
2 pretty satisfying
1 not very satisfying - Classification:
 - O-SLL-c-sq-v-3-a
 - Author's label:
 - Personal effectiveness
 - Page in publication:
 - 22
 - Observed distribution
 - Frequencies
 - 1: 14.3%, 2: 64.7%, 3: 21% (total 100%)
 - Summary Statistics
 - On original range 1 - 3 On range 0-10
 - Mean:
 - 2.07 6.90
 - SD:
 - 0.59 1.77