Correlational finding on Happiness and Test-intelligence
Subject code: I03ab01

StudyBachman et al. (1978): study US 1966
TitleYouth in Transition, Vol. VI. Adolescence to Adulthood. Change and Stability in the Lives of Young Men.
SourceInstitute for Social Research, 1978, University of Michigan, Ann Arbor, USA
PublicPublic highschool boys followed 8 years from grade 10, USA, 1966-74
Sample
Non-Response2.8% at T1, 17.2% at T2, 21.0% at T3, 28.9% at T4, 28.5% at T5
Respondents N =1628

Correlate
Author's labelIntelligence
Our classificationTest-intelligence, code I03ab01
Operationalization
Respondent's scores on three tests of intelligence (the 
Quick Test of intelligence, section J (vocubalary) 
of the General Aptitude Test Battery, and the Gates 
test of reading comprehension) and mean of these 
scores. Assessed at T1

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-HP-g-mq-v-5-atau=+ ns
                Quick     GATB   Gates   mean 
                test             test
T1 happiness:   +.01     +.04    +.03    +.03 T2 
happiness:   +.01     +.01    +.03    +.02
T3 happiness:   +.01     +.00    +.04    +.01 T4 
happiness:   +.01     +.03    +.03    +.02 All 
tau's not significant
T1:1966, T2:1968, T3:1969, T4:1970


Appendix 1: Happiness measures used
CodeFull Text
O-HP-g-mq-v-5-aSelfreport on 6 questions:

" Describe the kind of person you are. Please read each sentence, then mark how often it is true for you"
1 I feel like smiling
2 I generally feel in good spirits
3 I feel happy
4 I am very satisfied with life
5 I find a good deal of happiness in life
6 I feel sad

Response options:
5 almost always true
4 often true
3 sometimes true
2 seldom true
1 never true

Summation: average
Possible range: 1 to 5


Appendix 2: Statistics used
SymbolExplanation
tauGOODMAN & Kruskal's TAU
Type: descriptive statistic only.
Measurement level: Correlate: nominal, Happiness: ordinal
Range: [0; +1]

Meaning:
tau = 0 knowledge of the correlate value does not improve the prediction quality of the happiness rating.
tau = 1 knowledge of the correlate value enables a perfect (error-free) prediction of the happiness rating.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl