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考研复试高频理论--科斯定理

  • 2026-02-02 09:03:16
考研复试高频理论--科斯定理

理论内容

科斯定理:是指怎样走专业化的道路,即不做其他已成功的领域,只在自己成功的领域坚持专业化的发展,以获取大的收益。 

拓展:科斯定理由三组定理构成。 

科斯第一定理的内容是:如果交易费用为零,不管产权初始如何安排,当事人之间的谈判都会导致那些财富最大化的安排,即市场机制会自动达到帕雷托最优。 如果科斯第一定理成立,那么它所揭示的经济现象就是:在大千世界中,任何经济活动的效益总是最好的,任何工作的效率都是最高的,任何原始形成的产权制度安排总是最有效的,因为任何交易的费用都是零,人们自然会在内在利益的驱动下,自动实现经济资源的最优配置,因而,产权制度没有必要存在,更谈不上产权制度的优劣。然而,这种情况在现实生活中几乎是不存在的,在经济社会一切领域和一切活动中,交易费用总是以各种各样的方式存在,因而,科斯第一定理是建立在绝对虚构的世界中,但它的出现为科斯第二定理作了一个重要的铺垫。 

科斯第二定理通常被称为科斯定理的反定理,其基本含义是:在交易费用大于零的世界里,不同的权利界定,会带来不同效率的资源配置。也就是说,交易是有成本的,在不同的产权制度下,交易的成本可能是不同的,因而,资源配置的效率可能也不同,所以,为了优化资源配置,产权制度的选择是必要的。科斯第二定理中的交易成本就是指在不同的产权制度下的交易费用。在交易费用至上的科斯定理中,它必然成为选择或衡量产权制度效率高低的唯一标准。那么,如何根据交易费用选择产权制度呢? 

科斯第三定理描述了这种产权制度的选择方法。第三定理主要包括四个方面:第一,如果不同产权制度下的交易成本相等,那么,产权制度的选择就取决于制度本身成本的高低;第二,某一种产权制度如果非建不可,而对这种制度不同的设计和实施方式及方法有着不同的成本,则这种成本也应该考虑;第三,如果设计和实施某项制度所花费的成本比实施该制度所获得的收益还大,则这项制度没有必要建立;第四,即便现存的制度不合理,然而,如果建立一项新制度的成本无穷大,或新制度的建立所带来的收益小于其成本,则一项制度的变革是没有必要的。

在MBA复试中的考察与应用

在MBA面试中,科斯定理常被用来考察对‌企业边界‌、‌交易成本‌和‌制度设计‌的理解。常见问题包括:
‌理论应用‌:解释企业为何选择“做”或“买”(如垂直整合),如何用交易成本分析业务决策(如外包)。
‌案例分析‌:用科斯定理分析现实问题,如公司并购、产权纠纷或政策设计(如排污权交易)。
‌批判性思考‌:讨论定理的局限性(如交易成本难以衡量、产权界定可能引发公平问题)。

注意事项

      • 避免将科斯定理简单等同于“产权决定一切”,需强调‌交易成本‌的核心作用。
      • 在讨论中保持辩证思维,指出定理的理想化假设与现实复杂性。

      备考建议

      • 理解核心‌:重点掌握‌交易成本‌如何影响资源配置和制度选择。‌
      • 准备案例‌:结合自身行业准备1-2个应用案例(如优化供应链、解决冲突)。
      • 联系现实‌:思考定理对管理决策的启示(如设计激励机制、选择合作模式)。
      • 注意局限‌:讨论定理的现实约束(如信息不对称、谈判成本)。
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      1. CONNECT:[ UseTime:0.001182s ] mysql:host=127.0.0.1;port=3306;dbname=b_mffb;charset=utf8mb4
      2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001815s ]
      3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000718s ]
      4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001116s ]
      5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001610s ]
      6. SELECT * FROM `set` [ RunTime:0.001941s ]
      7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001903s ]
      8. SELECT * FROM `article` WHERE `id` = 474812 LIMIT 1 [ RunTime:0.010013s ]
      9. UPDATE `article` SET `lasttime` = 1770234628 WHERE `id` = 474812 [ RunTime:0.037571s ]
      10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000813s ]
      11. SELECT * FROM `article` WHERE `id` < 474812 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.007136s ]
      12. SELECT * FROM `article` WHERE `id` > 474812 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.003175s ]
      13. SELECT * FROM `article` WHERE `id` < 474812 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.006848s ]
      14. SELECT * FROM `article` WHERE `id` < 474812 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.013522s ]
      15. SELECT * FROM `article` WHERE `id` < 474812 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.007397s ]
      0.271324s