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Language StudiesEducational PsychologyLinguisticsLanguage EducationLanguage ProficiencyPsycholinguisticsAcademic Language DevelopmentAcademic Language ProficiencyAge Effects In Language LearningLanguage ExposureMultilingualismSecond Language AcquisitionAcademic BilingualismAcademic ProficiencyBilingual Language CompetenceCognitive Academic Language ProficiencyLanguage Proficiency DescriptorsLanguage Proficiency Effects