Study Ventegodt (1997): study DK 1993
- Public
 - 31-33 aged, born at the university hospital, Denmark, 1993
 - Sample
 - Respondents
 - N = 4626
 - Non Response
 - 36%
 - Assessment
 - 
        Questionnaire: Paper & Pencil Interview (PAPI)                    
Data were taken from the medical files of mothers and their babies 
Correlate
- Authors's Label
 - Moro reflex shortly after birth
 - Our Classification
 - 
            
 - 
                        
 - Remarks
 - This reflex is a response to unexpected loud noise.The primary significance of this reflex is in evaluating integration of the central nervous system
 - Distribution
 - 
                N all 1:4209,   1:3,5%,   2a:0,5%,   2b:0,2%,  3:16,3%,   4:6,8%,   5:70,9%,  
N all 5:4078, 1:2,7%, 2a:0,3%, 2b:0,2%, 3:13,0%, 4:1,6%, 5:80,2%, - Operationalization
 - Moro reflex shortly after birth as reported in medical file
1: cannot elicit, despite relaxation
2a: weakly expressed, leg movements alone
2b: weakly expressed, arm movements alone
3: all extremities moving slightly
4: atypical
5: normal
Assessed at day 1 and day 5 
Observed Relation with Happiness
1: Mt=7.74 1:7.55
2a: Mt=7.50 2a:9.29
2b: Mt=5.94 2b:7.86
3: Mt=7.75 3:7.71
4: Mt=7.75 4:8.10
5: Mt=7.74 5:7.71
1: Mt=7.39 1:7.05
2a: Mt=6.98 2a:8.58
2b: Mt=5.94 2b:7.50
3: Mt=7.39 3:7.65
4: Mt=7.43 4:7.48
5: Mt=7.41 5:7.40
1: Mt=6.83 1:6.79
2a: Mt=6.71 2a:7.68
2b: Mt=6.25 2b:6.79
3: Mt=7.01 3:7.08
4: Mt=7.00 4:7.14
5: Mt=7.01 5:7.01