Correlational finding on Happiness and Current age (in years)
Subject code: A04ab

StudyVanSluijs (2004): study NL 1987
TitleEffecten van Levenslooptransities op de Tevredenheid van Jong Volwassenen. (Effects of Lifecourse Transition on Satisfaction of Adolescents).
SourceMaster thesis, University Tilburg, 2004, Netherlands
URLhttp://worlddatabaseofhappiness.eur.nl/hap_bib/freetexts/vansluijs_J_2004.pdf
PublicYoung adults, followed from age 18 to 30, The Netherlands, 1987-1999
SampleProbability stratified sample
Non-Response36,6% (baseline)
Respondents N =836

Correlate
Author's labelBirth cohort
Page in Source 45, 52, 53, 62
Our classificationCurrent age (in years), code A04ab
Operationalization
Year of Birth:
1 1961
2 1965
3 1969
Observed distributionN T1 T3 T4 T5 Total 1961 583 431 344 315 1673 1965 579 400 297 271 1547 1969 588 425 295 244 1552
Remarks
Ss were interviewed at:
T1: 1987 when aged 18 to 26
T2: 1989 when aged 20 to 28
T3: 1991 when aged 22 to 30
T4: 1995 when aged 26 to 34
T5: 1999 when aged 30 to 34

Observed Relation with Happiness
Happiness
Measure
StatisticsElaboration/Remarks
O-Sum-cy-mq-v-7-aDM=
     T1         T3        T4        T5
     Mt    SD   Mt   SD   Mt   SD   Mt   SD
1961 7,43  1,94 7,59 1,74 7,53 1,81 7,55 1,88
1965 7,07  1,98 7,50 1,84 7,53 1,93 7,80 1,64
1969 7,24  1,80 7,31 1,75 7,40 1,80 7,84 1,54
O-Sum-cy-mq-v-7-ab=+.04 ns
COHORT 1965 (vs cohort 1961)

B controlled for personal characteristics :
- age 
- ageČ
- gender
- education
- cohort 1969 vs cohort 1961
- mental health
- neuroticism
- extraversion
O-Sum-cy-mq-v-7-ab=+.10 ns
additional controlled for lifecourse transitions 
(happpened or not):
- first job
- no job as yet
- left parental home
- living together/marriage first partner
- divorce from first partner
- living together/marriage second partner
- having first child
O-Sum-cy-mq-v-7-ab=+.10 ns
additional controlled for years since transition:
- first paid job
- no job
- leaving parental home
- living together/marriage first partner
- divorce from first partner
- living together/marriage second partner
- having first child

Unaffected by squaring of the above variables
O-Sum-cy-mq-v-7-ab=+.21 p < .05
additional controlled for lifecourse transitions 
(happened or not):
- first job
- no job as yet
- left parental home
- living together/marriage first partner
- divorce from first partner
- living together/marriage second partner
- having first child
O-Sum-cy-mq-v-7-ab=+.11 ns
COHORT 1969 (vs cohort 1961)

B controlled for personal characteristics :
- age 
- ageČ
- gender
- education
- cohort 1965 vs cohort 1961
- mental health
- neuroticism
- extraversion
O-Sum-cy-mq-v-7-ab=+.21 p < .05
additional controlled for years since transition:
- first paid job
- no job
- leaving parental home
- living together/marriage first partner
- divorce from first partner
- living together/marriage second partner
- having first child

Unaffected by squaring of the above variables

Unaffected by gender

B's indicate average difference between age 
categories over this 12 year period


Appendix 1: Happiness measures used
CodeFull Text
O-Sum-cy-mq-v-7-aSelfreport on four questions:

Using the 1-7 scale below, indicate how much each of the following statements applies for you in the last 18 months.
A In most ways my life is close to ideal
B The conditions of my life are excellent
C I am satisfied with my life
D So far, I have gotten the important things I want in life

Answers rated:
7 applies completely
6 apllies
5 apllies slightly
4 neither applies nor does not apply
3 slightly not applicable
2 not applicable
1 applies not at all

Computation: A+B+C+D divided by 4

Name: Shortened Diener's Satisfaction with Life Scale (SWLS), last years version
(In the original scale item 5 reads: 'If I could live my life over, I would change nothing'. This item is left out in this selection because a positive answer to this question does not necessarily mean that the respondent doesn't like the life he/she actually lives.)


Appendix 2: Statistics used
SymbolExplanation
bREGRESSION COEFFICIENT (non-standardized) by LEAST SQUARES (OLS)
Type: test statistic
Measurement level: Correlate: metric, Happiness: metric
Theoretical range: unlimited

Meaning:
b > 0 A higher correlate level corresponds with a higher happiness rating on average.
B < 0 A higher correlate level corresponds with a lower happiness rating on average.
B = 0 Not any correlation with the relevant correlate.
DMDIFFERENCE of MEANS
Type: descriptive statistic only.
Measurement level: Correlate: dichotomous, Happiness: metric
Range: depending on the happiness rating scale of the author; range symmetric about zero.

Meaning: the difference of the mean happiness, as measured on the author's rating scale, between the two correlate levels.
Source:
Ruut Veenhoven, World Database of Happiness, Collection of Correlational Findings, Erasmus University Rotterdam.
https://worlddatabaseofhappiness.eur.nl