COgnitive Dynamics in Early Childhood

Inclusion Criteria: * In order to be eligible to participate in the behavioural arm of this study, a subject must meet all of the following criteria: * Between the ages of 7 and 10 years at the moment of the first assessment. In order to be eligible to participate in the imaging arm of this study, a subject must meet all of the following criteria: * Between the ages of 8 and 10 years at the moment of the first assessment. Exclusion Criteria: * A potential subject will be excluded from participation in the study if the participant indicates not understanding the instructions of the behavioural tasks due to a language barrier. In the imaging arm of the study, a potential subject who meets any of the following criteria will further be excluded from participation in the imaging arm of the study: * History of neurological or psychiatric illness. * History of using psychotropic medications. * Contraindications for MRI. * Metal parts that cannot be removed, are present in or on upper body, e.g. plates, screws, aneurysm clips, metal splinters, piercings or medical plasters. (exception: dental fillings, crowns, a metal wire behind the teeth, tattoos and contraceptive coils). * Body containing metal fragments, in particular in the eye, e.g., caused by injuries when working with metal. * History of brain surgery. * Active implant(s) (e.g. pacemaker, neurostimulator, insulin pump, ossicle prosthesis) * Using a medical plaster that cannot or may not be taken off (e.g. nicotine plaster)