Do parents invest more or less in their high ability children? We provide new evidence on this question by comparing … determinant of cognitive ability. We find that parents invest more in high ability children, with a one standard deviation …

and cognitive development, we test if left-handed children do significantly worse than their right-handed counterparts …) Vocabulary, (3) Mathematics, (4) Reading and (5) Comprehension. We find that while left-handed children have a significantly … poor mental health. We also find that left-handed children have significantly lower cognitive development test scores than …