For researchers

In 2015, the iBerry Study was started to learn more about social, emotional and behavioral development during adolescence. This longitudinal cohort study follows 1000 adolescents from the Rotterdam Rijnmond region, the Netherlands. The study is to expect to run for ten years, inviting participants for a follow-up visit every two or three years. The inclusion is completed in 2019 (N=1022). Currently, adolescents are invited for the first follow up visit.

Potential participants were derived from the general population and selected in collaboration with Child and Family Center Rijnmond.  Participating adolescents are invited with one of their parents for a baseline visit consisting of interviews, questionnaires, neuropsychological tests, and biological measurements to assess several determinants of psychopathology.

The iBerry study is initiated and financed by the Epidemiological and Social Psychiatric Research institute (ESPRi). ESPRI is a network of organizations including Erasmus MC (Department of Psychiatry) together with mental health care organizations in the south-western part of the Netherlands.

Description of the cohort profile can be found here.

The iBerry Study is open to many different types of research collaboration. For more information or to pursue a research collaboration, contact dr. Nina Grootendorst at