As the basis and core of the whole of Western economics, the concept of "economic man" is a historic category.

“经济人”概念作为整个西方经济学的基础和核心，是一个历史范畴。

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Built on the base of information processing psychology and Cognitive psychology, PBL which is named as "a widely used core method" belongs to the category of constructivist learning theories.

PB L以信息加工心理学和认知心理学为基础的，属于建构主义学习理论的范畴，是建构主义教学改革设想当中的“一条被广泛采用的核心思路”。

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