For Westerners, numbers and time run left to right. For some Bolivians, any direction will do Consider a ruler, a timeline or even weights lined up in a gym. Why are the smaller values, the earlier ...

When you think of the numbers 1–10, you probably envision them running along a line, with 1 on the left and 10 on the right. Scientists have long debated whether this tendency is hardwired or ...

Is our ability to map numbers onto a physical space – such as along a line – a cultural invention rather than an innate ability? Members of a remote tribe in Papua New Guinea understand the concept of ...