Piaget and Inhelder tested whether children could seriate in two dimensions at once by asking them to sort leaves according to size and brightness.What did they find to be TRUE?

Question

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Piaget and Inhelder found that concrete operational children could seriate on both dimensions, which means they were able to sort the leaves according to size and brightness simultaneously. Preoperational children would likely struggle with this task because they have not yet developed the ability to mentally manipulate multiple variables at once. The quality of education was not mentioned as a factor in their findings.

Piaget and Inhelder Tested Whether Children Could Seriate in Two