Study Casas et al. (2007): study ES 1999

Public:

Adolescents, Spain 1999

Survey name:

Unnamed study

Sample:

Respondents:

N = 2300

Non Response:

Assessment:

Questionnaire: paper
Pupils: questionnaire administrated in class Parents: questionnaire completed at home (brought and returned by child in sealed envelope)

Correlate

Authors's label

age

Our Classification

Operationalization

1: 12
2: 13
3: 14
4: 15
5: 16

Observed Relation with Happiness