Expected utility theory

1. The reference base is final wealth, and people make investing decisions according to the expected utility value of the final wealth of an investment;

2. The utility increases with the increase of final wealth and the marginal utility is gradually decreasing.

Prospect theory

1. The reference base of decision is the amount of change of wealth;

2. People are risk-aversive for the investments in the range of profit-making and risk-preferring for the investments in the range of loss-making.

Psychological endurance hypothesis

1. The introduction of the income-cost ratio into the constraints of investment value;

2. The introduction of critical point of psychological endurance and revealing that the investment behaviors on the left and right side of the critical point demonstrate completely opposite features.