Study Yeo et al. (1987): study US 1979

Public

65+ aged, patients, ambulatory medical center, followed 18 mth, California, USA, 198?

Sample

Respondents

N = 139

Non Response

Refusal 15.91%, unable 6.17%, to 1st question. 11.36%, to 2nd question. 21.43%

Assessment

Interview: face-to-face

Correlate

Authors's Label

Psychological well-being

Our Classification

Operationalization

10 item index of closed questions on specific affects in the past few weeks.
(Bradburn Affect Balance Scale)

Assessed at
- T1: 1979
- T2: 18 months later

Observed Relation with Happiness