PROCEDURE: The study consisted of a seven-wave longitudinal family study (2015-2018). A sample of young adolescents (aged 10 to 13 at baseline) and their mothers, were recruited...

When is Spending Time with Peers Related to Delinquency? The Importance of Where, What and With Whom. Crime and Delinquency. A questionnaire to measure self reported delinquent...

Determine the relation between a number of background variables of pupils and their school career educational career types of school / results elementary school / advice of...

Differences in literacy related to individual differences. P1295a is the data file about pupils with imputation for the missing data, P1295b is the same file without imputation...

National evaluation educational priority policy at elementary schools/ pupils and parents. Pupils: languages tests and arithmetic tests (developed by CITO) and intelligence...

ICSEY is a large international study of the acculturation and adaptation of immigrant youth (aged 13 to 18 years) who are settled in 13 societies (N = 5,366), as well as a...