The Development of Dynamic System Reasoning

Abstract
This article concerns abilities that allow young persons to grasp essential features of open or ‘negentropic’ systems and relates these abilities to success and failure on measures of concrete and formal operational thought. Attention is focused first on the ability of 96 subjects between the ages of 8 and 18 to comprehend the feedback and emergent features characteristic of dynamic systems and, second, on the relations between these developing competencies and the emergence of formal thought. The conclusion reached from an examination of these illustrative data is that the abilities necessary to understand key properties of dynamic systems are distinct from but develop in parallel with those cognitive structures made familiar by Piaget.

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