Goals, Methods, and Progress in Neuroeconomics
介绍神经经济学如何利用神经科学方法研究经济选择,揭示习惯、目标导向等不同决策系统的机制,并探讨其对风险偏好、时间偏好等领域的应用。
Neuroeconomics shares the main goals of microeconomics: to understand what causes choices, and the welfare properties of choice. The novel goal is linking mathematical constructs and observable behavior to mechanistic details of neural circuitry. Several complementary methods are used. An initial insight from neuroscience is that distinct systems guide choice: Pavlovian and instrumental conditioning (learning) of state-value and response-value associations, overlearned habits, and model- (or goal-) directed value that requires deliberation. These systems can differ economically from rational choice—for example, habitual choices have low utility and price elasticities, whereas model-directed values are often constructed preferences. Neuroeconomics also provides evidence of situations in which utility maximization either works well (in simple binary choice) or benefits from the introduction of behavioral constructs. Neuroeconomics is well equipped to guide the theory of how choices depend on mental states, such as fear or cognitive load. Examples include extensive studies of risk and time preference, finance, and neural decoding of private information.