摘要：
The characteristics of scoresalways pay attention to two important characteristics of the variables:the type of measurement scale involved and wether the scale is continuous or discrete.** The four types of measurement scalesNumbers mean different things in different contexts.* nominal scale, each s 阅读全文
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因果律，the indedpendcy and the dependencyindependency and the %%conditions%%Understanding experiment and correlational studiesAll research generally focuses on demonstrating a relationship.1) what question you want to answer2) choice depends on the specific research design being used ##how many sample. 阅读全文
摘要：
Does the academy have this methods like the fluid, the object is changing dynamic with the subject and constrain varying?? 阅读全文