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arXiv 2409.12967cs.CY
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人类在评分编程作业时的一致性如何?

How Consistent Are Humans When Grading Programming Assignments?

Marcus Messer, Neil C. C. Brown, Michael Kölling, Miaojing Shi

AI总结:

本文通过28名评分者对40份CS1 Java作业的重复分组评分实验,发现人类评分者之间及个人内部均存在明显不一致,说明仅靠共享评分量规不足以保证编程作业评分一致性。

摘要:

为学生提供一致的总结性评估非常重要,因为他们获得的成绩会影响其在大学中的升学进展以及未来的职业前景。小班学生通常由单一评估者(例如模块/班级负责人)评分,而大班学生往往由多名评估者(通常是助教)评分,这增加了评分不一致的风险。为研究人类对编程作业评分的一致性,我们要求28名参与者每人对40份CS1入门Java作业进行评分,并就正确性、代码优雅性、可读性和文档给出分数与反馈;这40份作业被分成两批,每批20份。28名参与者被分为7组,每组4人(每组都对相同的40份作业评分),以便研究一组评估者之间的一致性。在第二批20份作业中,我们复制了第一批中的一份作业,以分析单个评估者的内部一致性。结果表明,本研究中的人类评分者无法就某一份学生作业应给的分数达成一致,而且个人评分也常常前后不一致,这表明人类评分的“黄金标准”观念可能存在缺陷。这凸显出,仅凭共享评分量规不足以确保一致性;在为编程作业评分时,还应探索评估者培训和替代评分实践等其他方面,以进一步提高人类评分的一致性。

英文摘要:

Providing consistent summative assessment to students is important, as the grades they are awarded affect their progression through university and future career prospects. While small cohorts are typically assessed by a single assessor, such as the module/class leader, larger cohorts are often assessed by multiple assessors, typically teaching assistants, which increases the risk of inconsistent grading. To investigate the consistency of human grading of programming assignments, we asked 28 participants to each grade 40 CS1 introductory Java assignments, providing grades and feedback for correctness, code elegance, readability and documentation; the 40 assignments were split into two batches of 20. The 28 participants were divided into seven groups of four (where each group graded the same 40 assignments) to allow us to investigate the consistency of a group of assessors. In the second batch of 20, we duplicated one assignment from the first to analyse the internal consistency of individual assessors. Our results show that human graders in our study can not agree on the grade to give a piece of student work and are often individually inconsistent, suggesting that the idea of a ``gold standard'' of human grading might be flawed. This highlights that a shared rubric alone is not enough to ensure consistency, and other aspects such as assessor training and alternative grading practices should be explored to improve the consistency of human grading further when grading programming assignments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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