Left-to-right coding of number magnitudes: Inherent or not?
One of the issues of major interest in numerical cognition is the relationship between the brain representation of space and that of numerical magnitudes. Space–Number interactions have been vari- ously ascribed to the inherent spatial coding of number magnitudes, to the verbal coding of space determined by the use of contrasting left/ right spatial codes in the task at hand or to the use of the same spatial codes in the selection of motor responses associated with numerical features such as magnitude or parity.