The human infant brain is the only known machine able to master a natural language and
develop explicit, symbolic, and communicable systems of knowledge that deliver rich …

This article focuses on how young children acquire concepts for exact, cardinal numbers
(eg, three, seven, two hundred, etc.). I believe that exact numbers are a conceptual structure …

The last decade has seen a rapid growth in our understanding of the cognitive systems that
underlie mathematical learning and performance, and an increased recognition of the …

In psychological research, there are often assumptions about the conditions that children
expect to encounter during their development. These assumptions shape prevailing ideas …

The natural numbers may be our simplest, most useful, and best-studied abstract concepts,
but their origins are debated. I consider this debate in the context of the proposal, by Gallistel …

We investigate number and arithmetic learning among a Bolivian indigenous people, the
Tsimane', for whom formal schooling is comparatively recent in history and variable in both …

Recent accounts of number word learning posit that when children learn to accurately count
sets (ie, become “cardinal principle” or “CP” knowers), they have a conceptual insight about …

Humans often communicate using body movements like winks, waves, and nods. However,
it is unclear how we identify when someone's physical actions are communicative. Given …

Understanding language neurobiology in early childhood is essential for characterizing the
developmental structural and functional changes that lead to the mature adult language …

Humans are unique in their capacity to both represent number exactly and to express these
representations symbolically. This correlation has prompted debate regarding whether …