- People in transition, metropolis, USA, 1969
- N = 216
- Non Response:
Half-structured focused interview
- Authors's label
- Cumulative stress
- Our Classification
- Number of challenging life-events from birth to few years prior to the interview.
Assessed by inspection of life-graphs and focused questions.
Observed Relation with Happiness
(positively correlated with happiness among middle-aged, negatively among pre-retirees)