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1·Internal validity - is there true cause and effect between variables.

内部有效性——在条件变化的时候，其成因和结果还会是真实的么？

2·The internal validity criteria should be used to define methodological quality in the meta-analysis.

Meta分析中应采用这些评价研究内部真实性的标准来评估研究的方法学质量。

3·The fundamental difficulty with XML documents is checking their internal validity (cohesion of document logic).

使用XML文档的主要困难在于检查其内部有效性(文档逻辑的内聚性)。

4·Internal validity: the degree to which the results of a study can be attributed to the treatment rather than extraneous or confounding variables.

内部效度：一个实验结果归咎于实验处理，而非归咎于无关的混淆的变量的程度。

5·Right assignment is relates to the debtor's and the third party's interests, so after has the internal validity between contract parties, it also should has the external interests.

债权让与涉及让与合同外的债务人和第三人利益，因此其在让与双方间生效后存在一个对外效力问题。

6·Overall, both the external and internal test score relationships provide additional evidence for the validity of the PN scores.

总而言之，外部和内部的测验分数的关系均为PN分数的有效性提供了额外证据。

7·Interest in historical methods had arisen less through external challenge to the validity of history as an intellectual discipline and more from internal quarrels among historians themselves.

人们对历史研究方法产生了兴趣，这与其说是因为外部对历史作为一门知识学科的有效性提出了挑战，还不如说是因为历史学家内部发生了争吵。

8·Psychometic properteis analysis showed that the scale achieved good to excellent levels of internal consistency, test-retest reliability, and content, construct, and criterion-related validity.

信效度研究表明，该量表的同质信度、重测信度、内容效度、结构效度和效标效度都达到了心理测量学的要求。

9·By analyzing the internal connection between the meaning of speech act and its validity claims, Habermas has emphasized that the meaning of speech act can be only demonstrated in communicative action.

这一理论通过对言语行为的意义与它的有效性要求之间内在关联性的分析，指出了言语行为的意义只有在交往行为中才能呈现出来。

10·Through the internal consistency and confirmatory factor analysis, the results show that the Questionnaire design has high reliability and validity.

并且通过内部一致性分析和验证性因子分析，结果表明量表具有较高的信度与效度。