In this review, we are pitting two theories against each other: the more accepted theory, the
number sense theory, suggesting that a sense of number is innate and non-symbolic …

It is widely accepted that human and nonhuman species possess a specialized system to
process large approximate numerosities. The theory of an evolutionarily ancient …

Humans and other species have biologically endowed abilities for discriminating quantities.
A widely accepted view sees such abilities as an evolved capacity specific for number and …

Time and space are tightly linked in the physical word. Recently, several lines of evidence
have suggested that the mental representation of time might be spatial in nature. For …

Evidence has been reported for quantity discrimination in mammals and birds and, to a
lesser extent, fish and amphibians. For the latter species, however, whether quantity …

With age and education, children become increasingly accurate in processing numerosity.
This developmental trend is often interpreted as a progressive refinement of the mental …

Basic intellectual abilities of quantity and numerosity estimation have been detected across
animal species. Such abilities are referred to as 'number sense'. For human species …

It is well known that humans describe and think of numbers as being represented in a spatial
configuration, known as the 'mental number line'. The orientation of this representation …

Discrimination of quantity (magnitude) was investigated in zebrafish (Danio rerio). Male
zebrafish chose to approach the location previously occupied by the larger in number …

In a variety of circumstances animals can represent numerical values per se, although it is
unclear how salient numbers are relative to non-numerical properties. The question is then …