动手能力的数字化测量?基于计算机的汽车修理技能评估的生态验证

IF 1.6 Q2 EDUCATION & EDUCATIONAL RESEARCH
Stefan Hartmann, Emre Güzel, Tobias Gschwendtner
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引用次数: 0

摘要

我们调查了利用脚本视频片段的基于计算机的评估工具的绩效措施的生态有效性。该工具的预期目的是评估汽车技师学徒的维护和修理技能,补充德国熟练工人考试中传统的动手评估形式。我们假设正确判断视频中显示的修复动作的能力可以很好地预测在实际操作场景中执行相应动作的能力。在职业培训的第三年,学徒们对真正的汽车或汽车系统进行维修,而专家则对他们的表现进行评估。在这之后,他们进行了基于计算机的测试,使用了非常相似的修理视频。视频判断与动手表现之间的相关性低于大多数修复行动以及总体分数的预期,表明测试分数解释的生态效度不足。然而,这些发现对于开发未来的测试是有希望的,因为一些修复动作的结果表明,通常有可能开发出生态有效的基于视频的项目,重点是实践技能。我们根据验证框架来讨论结果,该框架结合了来自不同来源的有效性证据,用于同一评估工具。最后,我们希望我们的发现有助于对考试的心理测量质量进行更广泛的讨论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Digital measurement of hands-on performance? Ecological validation of a computer-based assessment of automotive repair skills

Digital measurement of hands-on performance? Ecological validation of a computer-based assessment of automotive repair skills

We investigated the ecological validity of performance measures from a computer-based assessment tool that utilises scripted video vignettes. The intended purpose of this tool is to assess the maintenance and repair skills of automotive technician apprentices, complementing traditional hands-on assessment formats from the German journeymen’s exams. We hypothesise that the ability to correctly judge repair actions shown in videos is a good predictor of the ability to perform corresponding actions in hands-on scenarios. Apprentices in the third year of vocational training carried out repairs on real cars or car systems, while experts rated their performance. After this, they worked on our computer-based tests, which utilise videos of very similar repairs. The correlation between video judgement and hands-on performance was lower than expected for most repair actions as well as for overall scores, indicating insufficient ecological validity of the test score interpretations. However, the findings are promising for developing future tests, as the results for some repair actions indicate it is generally possible to develop ecologically valid video-based items focusing on hands-on skills. We discuss the results in the light of a validation framework that combines validity evidence from different sources for the same assessment tool. Finally, we hope our findings contribute to a broader discussion about the psychometric quality of exams.

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来源期刊
CiteScore
3.40
自引率
7.70%
发文量
9
审稿时长
13 weeks
期刊介绍: The main focus of this journal is to provide a platform for original empirical investigations in the field of professional, vocational and technical education, comparing the effectiveness, efficiency and equity of different vocational education systems at the school, company and systemic level. The journal fills a gap in the existing literature focusing on empirically-oriented academic research and stimulating the interest in strengthening the vocational part of the educational system, both at the basic and higher education level.
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