Topic: numerical representations

Dot comparison tasks are a prominent method for investigating non-symbolic numerical processing and its development during childhood. In these tasks participants must select the more numerous of two dot arrays presented to them. Until now, it has been assumed that the developmental improvement observed in the dot comparison task during childhood is due to increasingly more precise internal numerical representations. However, this sharpening hypothesis was recently challenged by Piazza et al. (2008), who proposed that the improvement is governed by a so-called filtering process, i.e. children b