外文翻譯--靈活性和計(jì)算機(jī)輔助評(píng)價(jià)技術(shù)(已修改)
2025-06-01 06:21 本頁(yè)面
【正文】 中文 3582 字 畢業(yè)論文（設(shè)計(jì)） 外文翻譯 外文原文 FLEXIBILITY AND THE TECHNOLOGY OF COMPUTERAIDED ASSESSMENT R. D. Dowsing School of Information Systems, University of East Anglia. UK Email: ABSTRACT There are many different facets to flexibility in puteraided assessment, depending on one’s viewpoint. As an example, for the developer increasing the flexibility of an assessment product means increasing the development cost but also increasing the size of the potential market. For the examiner, flexibility means the ability to use assessment aids in the specific way and for the specific purpose which he/she requires. For the candidate, flexibility means being given a range of ways to answer a set of questions so that he/she can demonstrate his/her knowledge/skill to the best effect. The higher the level of knowledge/skill to be assessed, the more difficult the assessment, the more flexible the assessor needs to be and the greater the involvement of human assessors in the assessment process. For simple types of assessment, for example, the use of multiplechoice questions, the assessment process can be almost pletely automated and little human examiner involvement is required. For more plex assessment, for example, assessment of a design rather than an implementation, the candidate has many more options available and the assessment is not simply in terms of true or false but rather in degrees of correctness. At such levels puter software acts as an aid or filter to the human examiner, marking some attempts but passing attempts which are difficult to assess to the human examiner. The optimum balance, in terms of costeffectiveness, between automatic assessment and the use of human examiners varies with time and is very sensitive to the number of candidates to be assessed. Most of the current puterised assessors assess oute rather than method since this is easier to automate. Techniques are now being developed which allow the method used to generate the answer to be collected and assessed. This will give the examiner additional flexibility in the assessment since learners can be assessed by oute but professionals can be assessed by method as well as oute. For example, in assessing IT skills a university student may be assessed for the ability to word process an essay correctly whereas a professional typist may be assessed for the efficiency of editing as well as correctness. This paper describes the technology required to add flexibility to puterbased assessors, with examples, and shows how adding flexibility to an assessor expands the potential uses. KEY WORDS Computerised assessment, IT skills, skills assessment. 1. INTRODUCTION There are three stakeholders in puterised assessment。 the system developer, the examiner and the candidates. Each stakeholder has their own requirements of the assessment system and these requirements can conflict. For the developer, the least risk strategy is to build a system with as much flexibility as possible so that it can then be tailored for specific uses by different examiners. Such a system will be applicable to a wide market and thus allow development costs to be amortised over a larger range of sales than a more specialised product. However, a generalpurpose product is never as good as a specifically targeted product for a particular application and thus the developer has the difficult task of balancing the development flexibility– and hence development cost – against the range of applicability of a product. Computerised assessors are changing rapidly, partly due to technology improvements, partly
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