Myomancy ADHD, Dyslexia and Autism

“An innovative study just published in the open-access science journal PLoS Biology provides intriguing evidence that the brain dedicates a region to understanding maths by as early as four years-old.
The researchers, led by neuroscientist Jessica Cantlon, used fMRI to brain-scan adults and four year-old children while they watched collections of shapes flash up in front of them.”
When does the brain develop maths?