Study Bray & Howard (1980): study US 1956

Public

40+ aged, male managers, Bell Telephone Company, 1956-1976

Sample

Respondents

N = 422

Non Response

panel loss a t T5: 37%

Assessment

Rating by experts
Expert ratings based on various methods used in assesment center

Correlate

Authors's Label

Earlier emotional stability

Our Classification

Operationalization

Guilford-Martin Inventory of Factors GAMIN-N scale,
This inventory reflects on characteristics of a positive self-concept.
This sub-scale in particular contains items reflecting lack of nervousness and possession of a steady temperament.

Assessed at T1 (20 years before T5).

Observed Relation with Happiness