项目功能差异在大学生情绪适应性的性别差异研究中的应用

DIF in Gender on Emotion Adaptation of College Freshmen

目的探讨项目功能差异(DIF)在研究大学新生情绪适应性性别差异中的作用。方法先用探索性和验证性因素分析《新生适应性量表》中“情绪适应性”分量表的一维性,再用MULTILOG程序进行DIF探测。结果在5个项目中,共探测出2个DIF项目,其中项目2为一致性DIF项目,项目4为非一致性DIF项目;男女生在“恐惧感”和“浮躁”上有差异。结论DIF的出现意味着效度的降低,但不能盲目地删除DIF项目;男女大学新生在“情绪适应性”上有各自特点。

Objective To detect the differential item functioning （DIF） using Item Response Theory model between the gender of college freshmen on a measure of emotion adaptation, witch is a subscale of ＂Student Adaptation to College＂ Questionnaire, and then discuss the impact of DIF. Methods Exploratory and confirmatory factor analysis was used to confirm that the dimensionality measured in this subscale was unitary. Next procedure MULTILOG was used to detect the DIF items. Results There were two DIF items in the five items; in which item 2 was an uniform DIF item while item 4 was a non-uniform item. Conclusions The t-test is not equal to the DIF analysis; The presence of DIF indicates the descending of validity, but that can not be deleted blindly; The respective characteristic in the both gender college students on the emotion adaptation is worth to be regarded.