Correlational finding on Happiness and subject: Satisfaction with water quality

StudyDiener & Tay (2015): study ZZ 2005 /1
TitleSubjective Well-Being and Human Welfare Around the World as Reflected in the Gallup World Poll.
SourceInternational Journal of Psychology, 2015, Vol. 50, 135 - 149
DOIDOI: 10.1002/ijop.12136
Public15+ aged, general public, 164 nations, 2005-2013
SampleProbability multi-stage random
Non-Response
Respondents N =1229431

Correlate
Author's labelGood water quality
Page in Source 137,140,141
Our classificationSatisfaction with water quality
Operationalization
Single direct question:
" In the city or area where you live, are you satisfied 
or dissatisfied with the quality of water?"
1 Satisfied
0 Dissatisfied

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
C-BW-c-sq-l-11-cr=+.66 p < .01
AVERAGE happiness by AVERAGE satisfaction with 
water quality in nation
C-BW-c-sq-l-11-crpc=+.40
rpc controlled for average household income in 
nation
C-BW-c-sq-l-11-cr=+.10 p < .01
CHANGE AVERAGE happiness by Chnge AVERAGE 
satisfaction with water quality in nation 
2006-2013


Appendix 1: Happiness measures used
CodeFull Text
C-BW-c-sq-l-11-cSelfreport on single question:

Here is ladder representing the 'ladder of life'. Let's suppose the top of the ladder represents the best possible life for you; and the bottom, the worst possible life for you. On which step of the ladder do you feel you personally stand at the present time?
10 best possible
9
8
7
6
5
4
3
2
1
0 worst possible life

This question was followed (not preceded) by items on life 5 years ago and 5 years from now.


Appendix 2: Statistics used
SymbolExplanation
rPRODUCT-MOMENT CORRELATION COEFFICIENT (Also "Pearson's correlation coefficient' or simply 'correlation coefficient')
Type: test statistic.
Measurement level: Correlate: metric, Happiness: metric
Range: [-1; +1]

Meaning:
r = 0 no correlation ,
r = 1 perfect correlation, where high correlate values correspond with high happiness values, and
r = -1 perfect correlation, where high correlate values correspond with low happiness values.
rpcPARTIAL CORRELATION COEFFICIENT
Type: test statistic
Measurement level: Correlate: metric, Happiness: metric
Range: [-1; +1]

Meaning: a partial correlation between happiness and one of the correlates is that correlation, which remains after accounting for the contribution of the other influences, or some of them, to the total variability in the happiness scores.
Under that conditions
rpc > 0 a higher correlate level corresponds with a higher happiness rating,
rpc < 0 a higher correlate level corresponds with a lower happiness rating,
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl