Study VanSluijs (2004): study NL 1987
- Public
 - Young adults, followed from age 18 to 30, The Netherlands, 1987-1999
 - Sample
 - Respondents
 - N = 836
 - Non Response
 - 36,6% (baseline)
 - Assessment
 - 
        Interview: face-to-face                    
Face to face interviews, questionnaires, telephone interviews (1999) 
Correlate
- Authors's Label
 - Got first child
 - Our Classification
 - 
            
 - 
                        
 - Remarks
 - Parental status assessed 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
 - Distribution
 - 
                N for who this transition took place between different periods
< T1= 135, T1-T3=176, T3-T4=167, T3-T5 or T4-T5=165, Total=643 - Operationalization
 - Change in parental status: got first child
 
Observed Relation with Happiness
- leaving parental home
- living together/marriage first partner
- divorce from first partner
- living together/marriage second partner
- first paid job
- no job
- 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
Stronger positive for women. Also in the long run.