Dyscalculia

In this new edition of his best-selling text, Brian Butterworth explains the very latest research in the science of dyscalculia in a clear, non-technical way. Crucially, he shows that dyscalculia is caused by a core deficit in the ability to accurately and swiftly represent the number of objects in a set, an ability that underpins learning arithmetic, and clearly differentiates dyscalculia from ot...