Neuroeconomics: what have we found, and what should we search for

Neuroeconomics is an interdisciplinary field, crossing boundaries between Economics, Psychology, and Neuroscience. Its original program was to provide a test for a large number of competitive theories of decision making. It has in part realized this program, and we review the main findings here. But its results are also posing the need for a new theoretical unifying framework. We outline a possible line of future research.