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Halford, Graeme S. – International Journal of Behavioral Development, 1978
Proposes that cognitive developmental stages can be accounted for in terms of information processing factors which limit the highest level of cognitive system which children can attain at any given age. Delineates four progressively more complex levels of cognitive mediation of the environment. Two experiments which support the developmental model…
Descriptors: Age Differences, Children, Cognitive Ability, Cognitive Development