Earticle

본 연구는 문제은행방식으로 운영되고 있는 국가기술자격 필답형 실기시험문제의 문제추출 을 위한 선정기준에 통계분석법을 활용하여 종목별 특성을 반영하고자 진행하였다. 이를 위해 수험인원 및 시행횟수가 많은 한 종목을 대상으로 선정, 최근 합격률 추세와 수험자 평균점수 데이터를 분석하여 적정 수준의 평균점수 및 합격률을 설정하였다. 또 최근 2년간 시행한 문 항에 대하여 문항별 수험자 평균득점에 영향을 미치는 요인을 다섯 가지 - 문항의 유형, 난이 도, 형태, 재출제, 출제기준항 - 로 지정하고, 요인별 평균득점간 유의성을 분산분석법으로 검 증하였으며, 선정된 주요인의 양적 조정을 통하여 해당 종목에 최적화된 선정기준안을 도출하 였다. 도출된 선정기준안은 2015년도 정기 실기시험에 적용ᆞ교부하여 목표평균점수와 실제 수험자 평균득점간 일치성을 검증하였으며, 본 연구 결과를 바탕으로 필답형 실기시험으로 시 행되는 국가기술자격의 종목별 특성을 반영한 문항관리기법을 제시하였다.

The purpose of this study is development of ‘the criteria for selection’ for make up open-ended type test questions operated by item pool method for national technical qualification in Korea. In order to develop the criteria for selection from item pool, the examinee’s response characteristics of a subject analyzed by using statistical method. This subject was selected by some specific options, which are the number of people and frequencies of test. The item analysis of this subject was carried out using last two years regular test data. Although there are many different factors that affect average score of examinees, in this case, five factors - item types, item difficulties, item categories, the ratio of questions from previous test, question making standard- were chosen for reviewing the interrelationship between average score and each factors. Through the conclusions of analysis of variance, the new criteria draft was reached. The derived new criteria draft in this study was applied to the regular test on 2015. Based on the results, the test item management mechanism considering examinee’s response characteristics was suggested.

Objective The nine diagnostic criteria for Internet Gaming Disorder (IGD) proposed in Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) have been widely adopted, but have also faced significant criticism. This study evaluated the psychometric properties of the nine DSM-5 criteria for IGD using item response theory (IRT).Methods Four DSM-5-based scales, including the Game Addiction Scale, the Internet Gaming Disorder Scale Short-Form, the Ten- Item Internet Gaming Disorder Test, and the Internet Gaming Disorder Scale, were administered to 1,530 Chinese adolescents and young adults. IRT models were used to assess the psychometric properties of these criteria. The potential for differential item functioning (DIF) related to sex and between adolescents and adults was also evaluated.Results All nine DSM-5 criteria demonstrated very high to perfect discrimination (a >1.38), providing substantial diagnostic information (item information >0.476) for diagnosing IGD. These scales, despite variations in wording and scoring methods, exhibited strong correlations in total scores (r≥0.502, p<0.001) and high consistency (Kendall’s W ≥0.656, p<0.05) concerning the fitted IRT parameters. Among the nine criteria, escape showed the lowest cross-scale discrimination, item information, and difficulty. In contrast, withdrawal showed the highest item information and discrimination, and the second highest difficulty. Additionally, there was no evidence of DIF related to sex or age (adolescents vs. adults) across nearly all scale items.Conclusion These findings indicate that the nine DSM-5 criteria generally possess acceptable psychometric properties for diagnosing IGD. Notably, withdrawal may represent a core symptom of IGD. Conversely, escape demonstrated inferior performance compared to the other eight criteria, indicating a potential need for further revision.