The ability to perceive approximate numerosity is present in many animal species, and emerges early in human infants. Later in life, it is moderately heritable and associated with mathematical abilities, but the etiology of the Approximate Number System (ANS) and its degree of independence from other cognitive abilities in infancy is unknown.…

When observing children playing rhythm echoes with percussion instruments it was noticed that they can repeat a certain number of sounds accurately and that this number increases depending on the children's age and musical experience. It was thought likely that this number has a direct correlation not only with the children's stage of motor…