为什么有些孩子数学更难？脑部扫描提供线索

● Some kids struggle with math. Now, scientists have pinpointed some of the specific thinking processes and brain regions that might explain why. When given simple math problems, kids with math learning disabilities were less cautious about giving their answers and did not slow down after making errors compared with kids with typical math skills, a new study shows. But these differences disappeared when those same kids were given problems with dots to represent numbers instead of Arabic number symbols, cognitive neuroscientist Hyesang Chang and colleagues report in the Journal of Neuroscience. The idea that number symbols can be a challenge is not new. …