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Measuring Stages of Growth: A Psychometric Model of Hierarchical Development. Occasional Paper No. 19.
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Wilson, Mark – 1985
A psychometric model called Saltus, which represents the qualitative aspects of hierarchical development in a form applicable to additive measurement, was applied. Both Piaget's theory of cognitive development and Gagne's theory of learning hierarchies were used to establish the common features of hierarchical development: (1) gappiness--the…
Descriptors: Cognitive Development, Cognitive Measurement, Developmental Stages, Elementary Education