The main theories are: new classical economic theory, principal-agent theory, transaction costs theory and property rights theory.

目前，主要的并购理论包括新古典经济理论、代理理论、交易成本理论和产权理论。

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The traditional neo-classical economic theory considers that wages are the reward for marginal product. In the perfectly competitive market, homogeneity of workers implies the same wage for all.

传统的新古典经济理论认为，工资是厂商对工人边际产品的回报，在完全竞争的市场上，同质工人获取同样的工资。

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New classical economics theory holds that the region which has rational economic man character will conduct research and development because of self interest.

新古典经济理论认为具备理性经济人性质的区域会因自利而独力研发。

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The classical theory of the rational, economic man would have him avoid risk and thereby avoid the coin flip.

FORBES: By Stephen Horan, PhD, CFA, CIPM

Along the way it charts Keynes's intellectual progress, showing how events, such as Britain's persistently high joblessness in the 1920s, fed the evolution of his view that classical economic theory was inadequate and that a capitalist economy called for government intervention.

ECONOMIST: John Maynard Keynes