计算机辅助口试评分稳定性历时研究——以PRETCO口试为例

A Longitudinal Study of the Rating Stability of Computer Assisted PRETCO-Oral

口语考试评分员的稳定性事关考试的效度、信度及公平性。本文对连续五次计算机辅助PRETCO口试评分进行历时分析,探讨PRETCO口试评分员在严厉度、评分准确度以及集中趋势三个方面的稳定性,并探究其背后的原因。

The stability of raters’rating of an oral test might pose a threat to its reliability,validity and fairness.This paper investigates raters’stability of scoring PRETCO-Oral longitudinally on the basis of the recent five times’rating results from perspectives of severity,accuracy and centrality.Interview is also employed to shed some light on the reasons of raters’ratings.