我猜想动机在认知能力的多个方面都发挥了一定的作用，不仅仅是合作行为，也包括社会学习和信息交流。
I suspect that motivation plays a role in many aspects of cognition, not just in cooperative behavior, but also in social learning, in communication.
论文包括四个部分：第一章回顾了近几十年来国内外关于学习动机的研究成果。
This thesis consists of four chapters: in chapter One, we had an overview of motivation research both at home and abroad in the recent decades of years.
二语学习动机不仅包括学习语言的愿望，还包括为此付出努力并坚持不懈。
Language learning motivation not only includes choosing language learning, but also involves sustaining efforts and persistence.
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