According to the so-called Morgan’s Canon “In no case is an animal activity to be interpreted in terms of higher psychological processes, if it can be fairly interpreted in terms of processes which stand lower in the scale of psychological evolution and development.” (C. Lloyd Morgan, 1903). Economists and game theorists, even behavioral ones, tend to favor more complex rationality models, also for explaining human behavior. I shall talk about some novel approaches to economic experiments that could help bridging between such approaches.