Reliability And Reliability Of The Accuracy Of Scores Over Time

2191 Words Dec 19th, 2016 9 Pages
Reliability refers to the consistency of scores over time, i.e. whether or not a score given would be the same if the test had been given at some other time.
Design reliability. In order to attain a higher level of design reliability, we chose to have the students produce three different tasks in order to have a bigger range of sample behaviors from them. This allows the test takers to have a few fresh starts, which means that their final grade does not rely only on one writing sample that they might not have been familiar with or that might have been affected by external factors such as their emotional state or the noise level coming from outside the classroom. Furthermore, the fact that each task is given on a different day (due to the fact that it is impossible in a school setting to give all three tasks on the same day) may help counter the effect that such external factors (as have been mentioned earlier) can have on the production of the ability. This way, we make sure that the students’ whole grades will not be totally determined by such factors, and that they will be able to redeem themselves and show what they are able to do in the other tasks of the test. In addition, we tried to make our instructions as clear and explicit as possible, in order to make sure the test takers will understand what they will have to do and not misinterpret the task. Another way we tried to increase the reliability of our test is by not giving much freedom on the different…

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