de Hevia, M. D., Castaldi, E., Streri, A., Eger, E. & Izard, V. (2017).

Perceiving numerosity from birth, Behavioral and Brain Sciences, (40), 21-22.

Leibovich et al. opened up an important discussion on the nature and origins of numerosity perception. The authors rightly point out that non-numerical features of stimuli influence this ability. Despite these biases, there is evidence that from birth, humans perceive and represent numerosities, and not just non-numerical quantitative features such as item size, density, and convex hull.