システム情報工学研究科　　　　　　　　　　　　　　　　　　　　　　　　    

         平成２3年度　　ファカルティ・セミナー

                       (Faculty Seminar)

日　時　：　2011年6 月3日(金)　　16:00−17:30

場　所　：　第三学群F棟　３F 1136

講演者　：　船木　由喜彦　[ 早稲田大学政経学部 ]

司会者　：　石川　竜一郎

演　題　：　Eye tracking Social Preferences

                           ＜ abstract ＞

Are revealed preferences real drivers of choice, or do they describe choices mainly in an instrumentalist (as if) manner? We track subjects‟ eye movements while they make choices in simple three-person distribution experiments. We characterize each subject in terms of three different types of social preferences: efficiency, maximin, and envy. For the characterization, we use either the choice data or the eye movements data. The hypothesis tested is that if a subject is "really" motivated by a particular social preference, then choosing in accordance with this preference will lead to an identifiable pattern of eye movements. We find that the social preferences inferred from the choices are in line with the choice rule inferred from the eye movements. This gives support for a „realistic‟ interpretation of revealed social preferences, and not just an „instrumentalist‟ (as if) interpretation.