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Taschow, Horst G. – 1971
In Piaget's dynamic conception of the child's cognitive growth, the transition from sensory-motor intelligence to the developmental stage of representational intelligence occurs during 5 to 7 years of age. The development proceeds from undifferentiation to differentiation, from unintentional to intentional, from unintelligent to intelligent, and…
Descriptors: Abstract Reasoning, Cognitive Development, Conference Reports, Intellectual Development