侦查作答抄袭的两种新指标的比较研究
发布时间：2019-06-27 17:39
【摘要】： 心理测验中有许多干扰因素会影响测验分数,影响考试的有效性和公平性。作弊是一个比较常见的因素,而在众多的作弊方法中,作答抄袭是较难侦查的一种。作答抄袭指的是一个作答者从另一个作答者那里得到部分或者全部答案。为了侦查作答抄袭,研究者提出了很多方法。作答抄袭统计量是一种主要的侦查作答抄袭的方法。作答抄袭统计量应用于侦查作答抄袭可以追溯到上个世纪二十年代,随后,研究者们提出了大量作答抄袭统计抄袭量指标。 本文介绍了早期的几种主要的用于侦查作答抄袭的统计量指标:K,g,ω。在此基础上,详细地介绍了两种侦查作答抄袭的新统计量指标:Kappa抄袭统计量指标和基于变换二项式的统计检验量指标的原理。本文采用称名反应模型进行数据模拟,考察了Kappa抄袭统计量和基于变换二项式的统计检验量这两种指标在测验长度、作答者人数、项目抄袭率三个因素的不同水平上的侦查效果,比较两种指标侦查作答抄袭时侦查率和Ⅰ型错误率的异同。 研究表明:(1)怀疑的抄袭者c抄袭怀疑的被抄袭者s的项目达到一定数量时,两种指标对于作答抄袭的侦查率都非常高。抄袭率为20%时,Kappa抄袭统计量指标的侦查率已高达0.9;抄袭率为30%时,基于变换二项式的统计检验量指标的侦查率也高达0.9。(2)测验长度,作答者样本量,项目抄袭率对于两种指标的侦查率都有相同的影响趋势。测验长度越长,项目抄袭率越高,侦查率越高。而作答者样本量对侦查率则无明显影响。(3)Kappa抄袭统计量的高侦查率以高Ⅰ型错误率为代价。错误侦查率为理论Ⅰ型错误率的3～5倍。基于变换二项式的统计检验量的错误侦查率则控制良好,均在理论Ⅰ型错误率值左右。
[Abstract]:There are many interference factors in psychological test that will affect the test score and the effectiveness and fairness of the test. Cheating is a more common factor, and among many cheating methods, plagiarism is difficult to detect. Plagiarism refers to the fact that one respondent gets part or all of the answer from another. In order to investigate plagiarism, the researchers put forward a number of methods. Plagiarism statistics are a major method of investigation and plagiarism. The application of plagiarism statistics in investigative plagiarism can be traced back to the 1920s, and then researchers put forward a large number of statistical plagiarism indicators. This paper introduces several main statistical indexes used in early investigation to answer plagiarism: K, g, 蠅. On this basis, this paper introduces in detail the principles of two new statistical indexes for investigation plagiarism: Kappa plagiarism statistics index and statistical test index based on transformation binomial. In this paper, the named reaction model is used to simulate the data, and the detection effects of Kappa plagiarism statistics and statistical tests based on transformation binomial on the test length, the number of respondents and the item plagiarism rate are investigated, and the similarities and differences between the detection rate and the type I error rate of the two indexes are compared. The results show that: (1) when the suspected plagiarist c plagiarizes the suspected plagiarist s, the detection rate of the two indicators for plagiarism is very high when the number of suspected plagiarism s items reaches a certain number. When the plagiarism rate is 20%, the detection rate of Kappa plagiarism statistics index is as high as 0.9, and when the plagiarism rate is 30%, the detection rate of statistical test index based on transformed binomial is also as high as 0.9. (2) the test length, the sample size of the respondent and the item plagiarism rate have the same influence trend on the detection rate of the two indexes. The longer the test length, the higher the plagiarism rate and the higher the detection rate. However, the sample size of respondents had no significant effect on the detection rate. (3) the high detection rate of Kappa plagiarism statistics was at the expense of high type I error rate. The error detection rate is 3 鈮，
本文编号：2507000
[Abstract]:There are many interference factors in psychological test that will affect the test score and the effectiveness and fairness of the test. Cheating is a more common factor, and among many cheating methods, plagiarism is difficult to detect. Plagiarism refers to the fact that one respondent gets part or all of the answer from another. In order to investigate plagiarism, the researchers put forward a number of methods. Plagiarism statistics are a major method of investigation and plagiarism. The application of plagiarism statistics in investigative plagiarism can be traced back to the 1920s, and then researchers put forward a large number of statistical plagiarism indicators. This paper introduces several main statistical indexes used in early investigation to answer plagiarism: K, g, 蠅. On this basis, this paper introduces in detail the principles of two new statistical indexes for investigation plagiarism: Kappa plagiarism statistics index and statistical test index based on transformation binomial. In this paper, the named reaction model is used to simulate the data, and the detection effects of Kappa plagiarism statistics and statistical tests based on transformation binomial on the test length, the number of respondents and the item plagiarism rate are investigated, and the similarities and differences between the detection rate and the type I error rate of the two indexes are compared. The results show that: (1) when the suspected plagiarist c plagiarizes the suspected plagiarist s, the detection rate of the two indicators for plagiarism is very high when the number of suspected plagiarism s items reaches a certain number. When the plagiarism rate is 20%, the detection rate of Kappa plagiarism statistics index is as high as 0.9, and when the plagiarism rate is 30%, the detection rate of statistical test index based on transformed binomial is also as high as 0.9. (2) the test length, the sample size of the respondent and the item plagiarism rate have the same influence trend on the detection rate of the two indexes. The longer the test length, the higher the plagiarism rate and the higher the detection rate. However, the sample size of respondents had no significant effect on the detection rate. (3) the high detection rate of Kappa plagiarism statistics was at the expense of high type I error rate. The error detection rate is 3 鈮，
本文编号：2507000
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