Correlational finding on Happiness and subject: Test-intelligence

StudySigelman (1981): study US 1974
TitleIs Ignorance Bliss? A Reconsideration of the Folk Wisdom.
SourceHuman Relations, 1981, Vol. 34, 965 - 974
Public18+ aged, general public, USA, 1974-76
Sample
Non-Response
Respondents N =2650

Correlate
Author's labelIntelligence
Page in Source 970
Our classificationTest-intelligence
Operationalization
Thorndike Intelligence Test (Thorndike,
1942); shortened form

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-HL-c-sq-v-3-aar=+.06 p < .01
O-HL-c-sq-v-3-aarpc=-.04 ns
rpc controled for: age, gender, race, education, 
family income, marital status, church attendance, 
political participation and health.
O-HL-c-sq-v-3-aaBeta=+.05 ns
 controled for: age, gender, race, education, 
income, marital status, church attendance, 
political participation and health.


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
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.
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