Validity is the most important criterion in judging the effectiveness of experiments in education. Researchers should pay great attention to the question of validity. This article stresses the four types of validity w...Validity is the most important criterion in judging the effectiveness of experiments in education. Researchers should pay great attention to the question of validity. This article stresses the four types of validity which are directly related to the quality of experimental re search. The four types of validity include construct validity , internal validity,statlstical con- clusion validity, and external validity. The author, using some practical examples in education , systematically discusses their theoretical concepts and evaluation methods.展开更多
文摘Validity is the most important criterion in judging the effectiveness of experiments in education. Researchers should pay great attention to the question of validity. This article stresses the four types of validity which are directly related to the quality of experimental re search. The four types of validity include construct validity , internal validity,statlstical con- clusion validity, and external validity. The author, using some practical examples in education , systematically discusses their theoretical concepts and evaluation methods.