Behavioural Issues in decision problems: the role of information

Operational research (OR) might exhibit a partial perspective in modelling decisional processes as rational processes, because individual choices are strictly in u- enced by cognitive and motivational biases which can be dierent among people and for each person in dierent situation. We point out that the level of information of each problem solver play an important role in causing inconsistent preferences, and we demonstrate that only about strict conditions decision models coincide with real choices, because only in particular cases the optimum and rational decision matches with the real one. Moreover, cognitive and motivational biases in uence also the mod- eler in the process of modelling. Behavioral Operational Research (BOR) studies the in uence of behavioral issues in the modelling process, to avoid such kinds of biases and create ecient models to dene choices in similar decision processes.