it's really hard to justify our own test as we ourselves believe that we did a perfect test. That is how we thought when we design our test. However when we come to the process of justifying our own test, we found that it is really hard to have a test with good reliability, practicality and validity comes together.
Wednesday, October 7, 2009
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As what we have learn, a valid test may also be reliable but a reliable test may not be a valid test.When we construct the test, we have to take into consideration both reliability and validity.So, its not an easy things to do.
In terms of practicability, a test is said to be perfect when the test is fast and cheap to administer and also good. In reality, this kind of test is not easy to construct. We realize this when we constructed our test. It might be easy to just construct a test but when begin to analyze it in terms of validity, reliability, and practicability, a good or perfect test is hard to create. There's many features that we have to consider especially the addressee or the candidates.
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