Study Prins (2008): study NL 2007

Public:

12-18 aged, The Netherlands, 2007

Sample:

Respondents:

N = 15116

Non Response:

Assessment:

Questionnaire: web

Correlate

Authors's label

Use of drugs

Our Classification

Operationalization

Selfreport on questions about the frequency of use of hard-and softdrugs.
Summed rating
1: no problem behavior
2: some
3: rather
4: serious
5: very serious

Observed Relation with Happiness