The methods to predict how to cause the ( consumer's)person's consumption of behavior are the same as those in other areas of economic and psychological methods. In fact, behavioral economics relied heavily on evidence generated to predict behavioral consumption by experiments. More recently, however, behavioral economists have moved beyond experimentation and the full range of methods are employed by economists. The experiements played a large role in the initial phase of behavioral economics because experimental control is exceptionally helpful for distinguishing behavioral explanations from standard ones. Suppose we observed this phenomenon in these any one of cares, in the form of failures of legal cases to settle before trial, costly divorce proceedings, and labor strikes. They are phenomenons of human' behaviours are caused by costs and benefits measurement of result. It implies the married people or the legal compensatory amount or labor strikes compensatory benefits will evaluate whether thier economic benefit is more or loss is more to decide divorce behavior or legal trial behavior or labour strikes compensatory behavior . So, consumer individual psychological behavior and economic benefits has close relationship to cause how consumer who prefers to make any consumption of choice every day. As the failures of legal cases to settle before trial , the behavioural economy concept would be difficult to tell whether rejection of offers was the result of reputation-building in repeated games, agency problems ( between clients and lawyers) confusion why the lawyer' client (appellant) who choose to continue to attempt to pay legal fee to find the lawyer to appellate the case if the case is fail at the first time . However, in these game experiments of failures of legal cases to settle before trial, costly divorce proceedings, and labor strikes. These explanations are ruled out because the experiments are played once, have no agents, and are simple enough to rule out confusion. Thus, the experimental data clearly establish that subjects are expressing concern for fairness.