The present paper reviews some of the changes that the introduction of a new currency—the euro—will bring to our everyday behavior, from the point of view of the psychological literature on numerical cognition. Problems that can be foreseen converting and using the euro are reviewed, including changes in terms of language (i. e., money labels and its lexicosyntactic structure) and price comparison. Possible answers to some of these problems are presented, considering the numerical cognition literature and several widely reported effects (e. g., the problem size/difficulty effect, symbolic distance effect). New opportunities for research in this domain both within countries and across countries are also discussed.
Symbolic distance: Unfamiliar versus familiar space
