内部效度、外部效度及其关系

Internal Validity,External Validity and the Relationship

效度是指研究结论的真实性程度和有效性程度,是衡量实验成败优劣的核心指标,在研究结论的概括性评价中占有重要地位。内部效度与所得结果的唯一解释性有关,外部效度与结果的可推广性有关。研究的内部效度与外部效度之间存在既统一又排斥的关系。探讨平衡内部效度和外部效度对立关系的方法是进一步研究的着眼点。

Validity refers to the degree of the veracity and the effectiveness of the conclusions in psychological research. Validity is the hard-core index to evaluate the success or failure of an experiment and it plays an important role in psychological evaluation. Internal validity concerns the only explanation of the results, and the external validity concerns the generalizability of the results. There are both unity and exclusion relationship antinomy of internal between internal validity and external validity. Exploring the method of balancing the validity and external validity is the respect for the further research.