...经验效用（experienced utility），指的是对结果的快乐价值的测量，而把传统经济决策中的效用称之为决策效用（decision utility），指的是决策中赋予结果的权重。经验效用的测量有两种不同的取向：时刻基础的取向和记忆基础的取向。
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而一般证券投资者都希望能以最低的风险和损失获得最大的决策效用和成果。
Generally speaking, investors lean to obtain bigger decision-making utility with least risk and loss.
在一开始，决策制定者就拥有一种“效用函数”或“偏好排序”把所有结果集合从最喜欢的到最不喜欢的排列起来。
At the outset, the decision-maker has a "utility function" or a "preference ordering" that ranks all sets of consequences from the most preferred to the least preferred.
其基本思想如下：根据期望效用理论，人们的风险决策是在权衡所有可能产出后得到的结果。
Here's the basic idea: According to expected utility theory, people make risky decisions by balancing the value of all possible outcomes.
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