Mrs. dubois knows that her son, andre, is very advanced in understanding math compared to his first grade peers. however, he is rather immature in his social relationships and doesn't share or interact well with classmates. his social skills are not what his mother would expect, given his advanced cognitive development in math. piaget's term for this variation in skills is

Paget's term for this variation in skills is decalage. The development psychologist Jean Piaget generated the terms of horizontal and vertical decalage to explain the delineation of the stages of cognitive development.
The horizontal decalage refers to the fact that the functions learned by a child are not always applied to the resolution of other similar problems, for example, a child who learned to perform two-digit sums but can not do three-digit sums.
Vertical decalage refers to the use of a cognitive skill learned at different stages of development.

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