With researchers from Leiden, Rotterdam, Amsterdam and Utrecht we are collaborating on a project funded by the Dutch Brain Fund (Hersenstichting) to study the effects of alcohol use on the developing adolescent brain. Data from three different longitudinal studies is used in this project: Generation R (Rotterdam), Braintime (Leiden), and Brain Scale (Amsterdam / Utrecht). The three datasets are being analysed simultaneously to investigate the possible neurocognitive changes from before the first alcohol consumption to the period following first alcohol consumption.