A Monte Carlo simulation study was conducted to examine outliers' influence on Type I error rates in ANOVA and Welch tests, and the effectiveness of two outlier accommodation methods: nonparametric rank based method and Winsorizing. Recommendations are given regarding outlier handling with different sample sizes and number of outliers.
The outliers' influence on power rates in ANOVA and Welch tests at various conditions was examined and compared with the effectiveness of nonparametric methods and Winsorizing in minimizing the impact of outliers. Results showed that, considering both power and Type I error, a nonparametric test is the safest choice to control the inflation of Type I error with a decent sample size and yield relatively high power.
Integrating intercultural competence in foreign language classrooms has been emphasized in China, yet scant explicit guidance currently exists on how to teach intercultural competence in college English courses. This study aimed at comparing and contrasting intercultural pedagogical approaches used by instructors in English courses for non-English majors, as well as teaching feedback provided by students enrolled in such courses. This study applied a sequential exploratory mixed research design. Methods such as face-to-face interviews and teaching and learning related document analyses were utilized to collect data, and generated qualitative and quantitative data. Three-dimensional meta themes emerged in mixed analysis, categorizing pedagogical approaches and teaching styles of individual instructors. Student feedback revealed learning experiences and difficulties of the teaching approaches.
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