protocolSection identificationModule nctId: NCT06330090, orgStudyIdInfo id: NL84688.091.23, secondaryIdInfos id: 101040534, type: OTHER_GRANT, domain: European Research Council, briefTitle: COgnitive Dynamics in Early Childhood, acronym: CODEC, statusModule overallStatus: NOT_YET_RECRUITING, startDateStruct date: 2024-03, primaryCompletionDateStruct date: 2027-12, completionDateStruct date: 2027-12, studyFirstPostDateStruct date: 2024-03-26, lastUpdatePostDateStruct date: 2024-03-26, sponsorCollaboratorsModule leadSponsor name: Radboud University Medical Center, class: OTHER, descriptionModule briefSummary: The goal of this accelerated longitudinal observational cohort study is to advance our understanding of cognitive variability in children aged 7 to 10 at first measurement. The CODEC study aims to integrate experience sampling methods, longitudinal designs, deep phenotyping cohorts, and state-of-the-art statistical methodologies to investigate three core questions:1. How does cognitive variability differ between individuals?2. What are the neural, psychological, and environmental mechanisms that underlie cognitive variability?3. What are the long-term consequences and outcomes associated with differences in cognitive variability?, conditionsModule conditions: Cognitive Change, designModule studyType: OBSERVATIONAL, designInfo observationalModel: COHORT, timePerspective: PROSPECTIVE, enrollmentInfo count: 600, type: ESTIMATED, armsInterventionsModule, outcomesModule primaryOutcomes measure: Reaction times from the vocabulary cognitive task, primaryOutcomes measure: Reaction times from the exploration cognitive task, primaryOutcomes measure: Reaction times from the Working Memory cognitive task, primaryOutcomes measure: Reaction times from the speed cognitive task, primaryOutcomes measure: Reaction times from the fluid reasoning cognitive task, primaryOutcomes measure: Mood score on smiley slider, primaryOutcomes measure: Sleep score on smiley slider, primaryOutcomes measure: MP-RAGE MRI sequence baseline, primaryOutcomes measure: Functional MRI sequence of low time constraint reasoning task at baseline, primaryOutcomes measure: gaze direction during reasoning task at baseline, primaryOutcomes measure: pupil dilation during reasoning task at baseline, primaryOutcomes measure: Naturalistic viewing fMRI at baseline, primaryOutcomes measure: Naturalistic viewing fMRI at follow-up, primaryOutcomes measure: Functional MRI sequence of high time constraint reasoning task at follow-up, primaryOutcomes measure: gaze direction during reasoning task at baseline at follow-up, primaryOutcomes measure: pupil dilation during reasoning task at baseline at follow-up, primaryOutcomes measure: Functional MRI sequence of low time constraint reasoning task at follow-up, primaryOutcomes measure: Sparse MP2-Rage MRI sequence baseline, primaryOutcomes measure: Diffusion weighted imaging MRI sequence baseline, primaryOutcomes measure: MP-RAGE MRI sequence follow up, primaryOutcomes measure: Sparse MP2-Rage MRI sequence follow up, primaryOutcomes measure: Diffusion weighted imaging MRI sequence follow up, primaryOutcomes measure: Total score for Highly Sensitive Child scale at baseline, primaryOutcomes measure: Total score for Strengths and difficulties questionnaire at baseline, primaryOutcomes measure: Total score for BRIEF-2 questionnaire at baseline, primaryOutcomes measure: Total score for BRIEF-2 questionnaire at follow-up, primaryOutcomes measure: Total score for Strengths and difficulties questionnaire at follow-up, primaryOutcomes measure: Total score for Mind Excessively Wandering Scale scale at baseline, primaryOutcomes measure: Originality score for the Alternative Uses Tasks at baseline, primaryOutcomes measure: Originality score for the Alternative Uses Tasks at follow-up, primaryOutcomes measure: Total score for Parent-reported Mind Excessively Wandering Scale scale at baseline, primaryOutcomes measure: Total score for Parent-reported Socio-demographic questionnaire at baseline, primaryOutcomes measure: Total score for Parent-reported Socio-demographic questionnaire at follow-up, primaryOutcomes measure: Total score for Mind Excessively Wandering Scale scale at follow-up, primaryOutcomes measure: Total score for Parent-reported Mind Excessively Wandering Scale scale at follow-up, primaryOutcomes measure: Total score for Highly Sensitive Child scale at follow-up, secondaryOutcomes measure: motivation rating for cognitive tasks, secondaryOutcomes measure: Decibel of background noise during cognitive testing, secondaryOutcomes measure: Academic school result baseline, secondaryOutcomes measure: Academic school result follow-up, secondaryOutcomes measure: Parent reaction times on cognitive battery at baseline, secondaryOutcomes measure: Parent reaction times on cognitive battery at follow-up, eligibilityModule sex: ALL, minimumAge: 7 Years, maximumAge: 13 Years, stdAges: CHILD, contactsLocationsModule, hasResults: False