Notes on Utility: Some Factors which Contribute to Individual Achievement and Plausible Relation to Welfare

We consider that it is very essential to base economics theory on measurable quantity from the beginning, because optimization at individual and aggregate levels is the very hallmark of modern economics theory (Tubaro, 2006, p.1 [3]). That measurable quantity can be observed by virtue of experiment or field observation. Indeed, we think that such an experimental approach is new and original in economics thinking, especially from the viewpoint of grounded approach, because after all in studying economics we consider human social behavior and their social interactions. In grounded approach, theory building should be based on actual field observation.