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A theory of cognitive development: The control and construction of hierarchies of skills.

Educational PsychologyAbilities DevelopmentEducationSkill DevelopmentCognitionLearning And DevelopmentSocial SciencesPsychologyDevelopmental PsychologyCognitive ConstructionCognitive DevelopmentIndividual DevelopmentCognitive AnalysisCognitive FactorCognitive ScienceCognitive StudyLearning SciencesHigher Order ProcessMental Development