左撇子更容易成为天才，惯用左手是好事_BEC初级作文

左撇子更容易成为天才，惯用左手是好事

However, the idea that left-handedness is a predictor of superior intellectual ability has been challenged recently. Several scholars have claimed that left-handedness is not related to any advantage in cognitive skills, and may even exert detrimental effects on general cognitive function and, hence, academic achievement.

但是日前，左撇子的智力发育更好这一说法面临挑战。一些学者认为，左手偏向性和认知技巧优势没有任何联系，左手偏向性甚至可能有损一般的认知能力，并因此妨碍获得学术成就。

For example, one study discovered that left-handed children slightly under-performed in a series of developmental measures. Also, a recent review reported that left-handers appear to be slightly over-represented among people with intellectual disabilities. Another large study found that left-handers performed more poorly in mathematical ability in a sample of children aged five to 14.

比如有项实验发现惯用左手的儿童在种种发展性测试中表现欠佳。最近也有报告表示左撇子相较其他人更多地表现出了智力障碍。更有大型试验称，通过对5到14岁的儿童进行数学能力测试，发现其中惯用左手的孩子表现更加不如人意。

Left-handers seem to have, on average, an edge when solving demanding mathematical tasks – at least during primary school and high school. Also, being strongly right-handed may represent a disadvantage for mathematics. Taken together, these findings show that handedness, as an indicator of connectivity between brain hemispheres, does influence cognition to some extent.