Until 2018, from age 7 to 20, eight main data collections have been carried out with the z-proso participants. In addition, from wave 1 to 4, one of their parents has also been surveyed, and up to wave 7 class teachers participated in postal surveys. The document below provides an overview on all data collections carried out to date.
The first four data collections with children, parents, and teachers were completed between 2005 and 2009 and are documented below. The documentation for the next four data collections (2011-18) is currently in preparation.
An Instruments Summary entail detailed description of all the instruments and information about the data collection.
Technical Reports contain central information regarding the psychometric features of each instrument. The reports display the most important descriptive statistics: means, sum indexes according to gender and treatment group as well as correlations with the most significant behavioural variables, aggression and pro-sociality.
Technical Reports are password-protected and are available only for the instruments which are accordingly labelled (♦).
For further information please contact Denis Ribeaud