Correlational finding on Happiness and Extraverted
Subject code: P05az

StudyHeadey & Krause (1994): study AU 1981
TitleInequalities of Income, Health and Happiness: The Stratification Paradigm and Alternatives.
SourcePaper presented at the 13th World Congress of Sociology, 1994, Bielefeld, Germany
Public18-65 aged, general public, Victoria, Australia, followed from 1981 to 1989
SampleProbability simple random sample
Non-Response
Respondents N =502

Correlate
Author's labelExtraversion
Page in Source 15+51
Our classificationExtraverted, code P05az
Operationalization
Self report on 24 questions measuring sociability an 
impulsiveness
Eysenk Personality Inventory
(Items moet ik nog opzoeken)
Error EstimatesCrombach alpha 0.63

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-DT-u-sqt-v-9-ar=+.18 p < .05
1981 Extraversion by 1983 Happiness: raw r
O-DT-u-sqt-v-9-ar=+.25 p < .05
1981 Extraversion by 1983 Happiness: disattenuated
O-DT-u-sqt-v-9-a
Disattenuated correlation were obtained assuming 
validity coefficient of 0.63 for extraversion and 
0.8 for happiness


Appendix 1: Happiness measures used
CodeFull Text
O-DT-u-sqt-v-9-aSelfreport on single question asked twice

'How do you feel about your life as a whole?'
1 terrible
2 very unhappy
3 unhappy
4 mostly dissatisfied
5 mixed feelings
6 mostly satisfied
7 pleased
8 very pleased
9 delighted


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.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
http://worlddatabaseofhappiness.eur.nl