句酷批改网英语作文评分的信度和效度研究

Reliability and Validity of the Assessment by the Pigaiwang on College Students' Writings

作文批改与反馈是英语写作教学的一个重要环节, 对提高学生的写作能力有着不可低估的作用，句酷批改网以其优势而深受广大师生的喜爱。句酷批改网的作文评分有很高的信度，但评分显著地高于教师的评分，尚不能反映学生英语作文的真实水平。从效度上看，以句子为单位，在词汇和语法等方面进行详细的评价，但在篇章结构、文体修辞、内容逻辑性和连贯性方面不能给学生充分的反馈。在运用批改网的同时，我们还要同其他的评估方式结合起来。

The assessment and feedback plays an important role in English writing teaching, so its reliability and validity should be considered when we use Pigaiwang, an online automated essay scoring system which is popular on college campuses. The system is very reliable but the scores given by it are significantly higher than those by teachers, so the scores cannot reflect students' present writing proficiency. The system can evaluate sentences and provide sufficient information on the words used and the grammatical points in the writings, but cannot provide evaluation on their organizations, styles, coherence and cohesion, etc. If the system is used, it should be combined with teachers' evaluation and the peer feedback.