Midpoint: a tool to build artificial models of numerical cognition

The present paper describes a tool developed to model and simulate tasks related to numerical cognition, a very important ele- ment of both animal and human cognition. In particular, we describe how this software has been used to study a bias that has been consis- tently observed in humans, both adults and children, about the calcu- lation of the middle point between two numbers and related with the position of numbers in intervals, called NIPE (number interval position effect). Along with the description of the software and the experimental results about the NIPE effect, some results are reported which show the potential of this approach.