Correlational finding on Happiness and subject: Household income

StudySchyns (2000): study DE 1992
TitleThe Relationship between Income, Changes in Income and Life-Satisfaction in West Germany and the Russian Federation. Relative, Absolute or a Combination of Both?
SourceDiener, E.;Rathz, D.R.;Eds.: "Advances in Quality of Life Theory and Research", Kluwer, 2000, Dordrecht, Netherlands, 83 - 110
Public18+ aged general public, Germany, followed 4 years, 1992-1996
SampleProbability multi-stage cluster sample
Non-Response
Respondents N =4398

Correlate
Author's labelCurrent income
Page in Source 95+98
Our classificationHousehold income
Operationalization

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-SLW-c-sq-n-11-dBeta=+.04 p < .05
Current income (T1) by current happiness (T1)

Slightly stronger when log of income is used, 
which suggests a curvi-linear relationship

Beta controlled for:
- gender
- age
- education level
- employment status
- marital status
O-SLW-c-sq-n-11-dDM=+
1)  -0.75 SD or more        M=6.9
2)  -0.75 SD thru -0.50 SD  M=7.1
3)  -0.50 SD thru -0.25 SD  M=7.4
4)  -0.25 SD thru mean      M=7.5
5)  mean  thru 0.25 SD      M=7.6
6)  0.25  SD thru 0.50 SD   M=7.6
7)  0.50  SD or more        M=7.7


Appendix 1: Happiness measures used
CodeFull Text
O-SLW-c-sq-n-11-dSelfreport on single question:

Taking all things together, how satisfied are you with your life these days? Please answer with the help of this scale. For instance, when you are totally satisfied with your life, please tick '10'. When you are totally unsatisfied with your life, please tick '0'. You may use all values in between to indicate that you are neither totally satisfied nor totally unsatisfied."
10 totally satisfied
9
8
7
6
5
4
3
2
1
0 totally unsatisfied


Appendix 2: Statistics used
SymbolExplanation
BetaSTANDARDIZED REGRESSION COEFFICIENT by LEAST SQUARES (OLS)
Type: test statistic.

Measurement level: Correlates: all metric, Happiness: metric.
Range: [-1 ; +1]

Meaning:
beta > 0 a higher correlate level corresponds to a higher happiness rating on average.
beta < 0 a higher correlate level corresponds to a higher happiness rating on average.
beta = 0 no correlation.
beta = + 1 or -1 perfect correlation.
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