![]() The purpose of the test determines the type of test you're going to produce, which in turn affects the kinds of tasks you're going to choose, the number of test items, the length of the test, and so on. Each of these different reasons for testing represents a different test purpose. Or, you might want to use a test to place learners into groups based on their ability, or to provide test takers with a certificate of language proficiency. You could be trying to check their learning at the end of a unit, or trying to understand what they know and don't know. ![]() There are several reasons why you might want to test your students. Instead, we can say that a test is valid for a particular purpose. We can never really say that a test is valid or not valid. Validity has different elements, which we are now going to look at in turn. A valid language test for university entry, for example, should include tasks that are representative of at least some aspects of what actually happens in university settings, such as listening to lectures, giving presentations, engaging in tutorials, writing essays, and reading texts. For example, a valid driving test should include a practical driving component and not just a theoretical test of the rules of driving. Validity refers to whether a test measures what it aims to measure. The fundamental concept to keep in mind when creating any assessment is validity. ![]()
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