external_and_internal_validity

1.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。
dict.yoduao.com
2.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。
dict.yoduao.com
3.Interest tin historical methods has arisen less through external challenge to the validity of history as an intellectual discipline and more from internal quarrels among historians themselves.
对历史方法的兴趣，与其说是起源于对历史有效性的外部挑战，倒不如说是起源于历史学家们内部的争论。
dict.yoduao.com