Jean Piaget's epistemology is a theory about cognitive structure, genetics and development instead of a theory about pure developmental psychology. 摘要皮亚杰的发生认识论并不是一个纯粹的发展心理学理论,而是一个关于认知的结构及其发生与发展的理论。
He uses common sense to intuit what these traits are, but on this subject economists have a lot to learn from developmental psychologists. 他利用常识凭直觉判断出这些特性是什么,不过在这个课题上,经济学家有许多东西要向发展心理学家们学习。