P-, D- and Rit values, a new start

When you have built and implemented a test and you think you are done…then think again! You are not done yet. Computer based tests that consist of items that can be auto-marked generate heaps of management information. The testing tool records the input of all candidates and this data can be turned into valuable information. P-, D- and Rit-values are examples of useful psychometric data. Through analysing the statistics and making appropriate changes the test can be improved. Manual Task Despite...
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So, is a randomised test fair?

It depends. A randomised test can be totally fair but it can also be biased. A test is biased when the results have consequences that unfairly advantage or disadvantage test takers. Is it possible to determine whether a test is fair? Whether it is equally difficult for all candidates? Yes it is. But only in hindsight. An analysis of the average p-value of the test is of great help in establishing the fairness of the test. When the average p-values are spread across a broad range ...
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Consider this: video clips in tests

One of the advantages of computer based testing is the ability to use multimedia files. From a technical perspective the inclusion of video clips is not a problem. Almost all vendors of computer based testing solutions will offer this in some shape or form. There is a variety of low-cost tools that will allow you to place your videos online and embed them your test. YouTube offers a simple, reliable and cost-efficient way of embedding video in your test. By default YouTube videos a...
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Multiple choice is king

Crown
Computer based testing tools all offer the well-known and highly maligned multiple choice question, also known as the MCQ item type. But did you know that testing (or examination) tools offer many other different item types? And that most of these are based on closed questions? Candidates’ responses to closed questions can be automatically marked. In my view this is a great example of the benefits that testing software offers versus the classic paper and pencil test. Providing the c...
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