Correlational finding on Happiness and subject: Psychoticism in nation

StudyVanHemert et al. (2002): study ZZ 1977
TitleStructural and Functional Equivalence of the Eysenk Personality Questionnaire Within and Between Countries.
SourcePersonality and Individual Differences, 2002, Vol. 33, 1229 - 1249
PublicNormal adults, general public, 30 countries, 1977-1997
SampleMixed samples
Non-Responsenot reported
Respondents N =333

Author's labelPsychoticism
Page in Source 28, 35
Our classificationPsychoticism in nation
Psychoticism scale of Eysenk Personal Questionnaire 
(1975 version)
Observed distributionM=4.96
Error EstimatesCrombach's alpa=.66
Meta analysis of 333 samples in 38 countries with 
68,374 respondents.

Observed Relation with Happiness
O-Sum-*-sq-vt-11-ar=-.41 p < .05
Average happiness by average Psychotism in 38 

Appendix 1: Happiness measures used
CodeFull Text
O-Sum-*-sq-vt-11-aSelfreport on single questions:

This measure of average happiness in nations combines responses to different questions on happiness and life-satisfaction rated on different scales. Precise items and rating scales differ per nation. Average scores per nation were transformed afterwards to a common 0-10 scale.

Name: Diener's SWB-score of nations

Appendix 2: Statistics used
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]

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.
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.