The article reviews the definitions of sunk cost and the sunk cost effect,the categories of the sunk cost effect and its functional areas,then makes explanations in terms of psychological theories.

• 文章概括了沉没成本及沉没成本效应的定义,沉没成本的种类和发生领域,并用心理学理论对沉没成本效应进行了解释。