Correlational finding on Happiness and subject: Stage of life

StudyEasterlin (2001): study US 1994
TitleIncome and Happiness: Towards a Unified Theory.
SourceThe Economic Journal, 2001, Vol. 111, 465 - 484
URLhttp://www.jstor.org/stable/2667943
PublicAdults, general public, USA, 1994
SampleProbability simple random sample
Non-Response
Respondents N =2627

Correlate
Author's labelLevel of Education
Page in Source 475
Our classificationStage of life
Operationalization
1  at least highschool education
0  not finished highschool

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-HL-c-sq-v-3-aaDM=+
Birth cohort 1941-50
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O-HL-c-sq-v-3-aaDM=+
Birth cohort 1931-40
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O-HL-c-sq-v-3-aaDM=+
Birth cohort 1921-30

Difference smallest around middle age in all 
cohorts
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Appendix 1: Happiness measures used
CodeFull Text
O-HL-c-sq-v-3-aaSelfreport on single question:

Taken all together, how would you say things are these days? Would you say that you are....?
3 very happy
2 pretty happy
1 not too happy


Appendix 2: Statistics used
SymbolExplanation
DMDIFFERENCE of MEANS
Type: descriptive statistic only.
Measurement level: Correlate: dichotomous, Happiness: metric
Range: depending on the happiness rating scale of the author; range symmetric about zero.

Meaning: the difference of the mean happiness, as measured on the author's rating scale, between the two correlate levels.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl