One finding which implies that formal schooling promotes cognitive growth is that

Question

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Both A and B are findings that suggest formal schooling promotes cognitive growth. In option A, the fact that students in higher grades score higher on intellectual tests than children of the same age but in a lower grade shows that schooling can enhance cognitive abilities. Option B supports the idea that formal schooling promotes cognitive growth because students on extended-year school calendars outperform same-grade peers on regular calendars at the beginning of the next school year, indicating that more schooling time leads to better academic performance. Therefore, both options A and B provide evidence that formal schooling promotes cognitive growth.

One Finding Which Implies That Formal Schooling Promotes Cognitive Growth