To the Pursuit of Judgment Formation Theory from the Pursuit of Preference Aggregation Theory :

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  • 「選好集約論」の探求から「判断形成論」の探求へ
  • 会長講演 「選好集約論」の探求から「判断形成論」の探求へ--民主的社会のための新たな集合的意思決定論の構築をめざして
  • カイチョウ コウエン センコウ シュウヤクロン ノ タンキュウ カラ ハンダン ケイセイロン ノ タンキュウ エ ミンシュテキ シャカイ ノ タメ ノ アラタ ナ シュウゴウテキ イシ ケッテイロン ノ コウチク オ メザシテ
  • ―民主的社会のための新たな集合的意思決定論の構築をめざして―
  • Toward Construction of a New Theory of Collective Decision Making for Democratic Society

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There are two different problems of collective decision making in a democratic society. One is the problem of aggregating individuals' preferences into the social preference. The other is the problem of forming the social judgment based on individuals' judgments. In order to solve each of these problems, we must use some theory and method suitable for each. The previous research of collective decision making inclines too heavily towards preference aggregation. We need to recommend research of judgment formation. What characteristics have two types of theory and method? How relevant is the study of judgment formation to recent research trends in some fields around a democratic decision? How significance has it in modern times? The purpose of this paper is to get some tentative answers to each of these questions by reviewing the history of research of collective decision making form ancient Greece to the present age. The opinion of this paper does not already have a preference aggregation theory in the point of being unnecessary, but has the point that it is necessary to recommend the pursuit of a judgment formation theory and has such theories in the point of having a complementary relation for democratic determination.

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