- 18+ aged, general public, USA, 1973/7
- N = 222
- Non Response:
Using highly structured questionnaires.
- Authors's label
- Usefulness of life
- Our Classification
- Closed question on specific feelings about life: "I think my life is useless
Rated on a 7-point scale ranging from positive (7) to negative (1)
Observed Relation with Happiness
at the beginning, in the middle and at the end.
O-DT asked first : r=+.30
O-DT asked second: r=+.30
O-DT asked third : r=+.40
Index of negative affects: r=-.10