李艷梅

◆Abstract：Nowadays，unpredictability，biases，and complexity of human thoughts have been paid more and more attention when our traditional methods or theories can not continue to explain them reasonably in economics，so trying to study behavioral economics to take into these effects involving peoples activities is very significant.Therefore，the necessary level of behavioral economics for specific situation needs to be described and evaluated reasonably.Since we will definitely consider some features related to the necessary level of behavioral economics for specific situations，the Fuzzy Comprehensive Evaluation Model （FCEM） can be used here to explain this necessary level greatly.

◆Key words：Fuzzy Comprehensive Evaluation Model；Necessary Level；Behavioral Economics

ⅠIntroduction

In recent decades，many studies have been done by considering behavioral economics due to unpredictability.In general，our society has already tried to figure out the mechanism，theory，and trend behind every area.However，unpredictability，biases，and complexity of human thoughts have been paid more and more attention when our traditional methods or theories can not continue to explain them reasonably，especially in economics.In other words，our human beings can not simply be regarded as “rational people”.And then，we take these effects into other disciplines involving peoples activities.Therefore，behavioral economics started to play a vital role in lots of diverse aspects.Many communities are implementing behavioral economics models in an effort to consider long-range planning goals or investigate （Hofman 2011； Congdon and Shankar 2018）.

As we all know，how to describe one problem in mathematical techniques is always an important project.Actually，for some systems with fuzzy conception evaluation objects，analyzing is very complicated to give a precise expression.Besides，the necessary level of behavioral economics for specific situations is also sophisticated to be quantified for us.However，when people try to solve problems in behavioral economics，they always propose mathematical and computational techniques，such as statistical methods （Bizon 2018）.Since we will definitely consider some features related to the necessary level of behavioral economics for specific situations，the Fuzzy Comprehensive Evaluation Model （FCEM） is really helpful here，which has been used to solve fuzzy comprehensive problems for a long period of time.

II Assumptions

Assume that everyone can be classified into the specified groups which will be studied as suits of evaluating the necessary level of behavioral economics.