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Post by og2707 on Sept 15, 2017 0:56:41 GMT
The scale would be displaying the same value each time an object with weight was placed upon it. The objects could differ in weight, but the scale would still display the same value. The scale would be reliable, due to its consistency, but not valid, due to its inaccuracy.
A scale which is valid but not reliable is not possible, as such a scale would be accurate but not consistent. Accuracy relies on consistency for valid results. If the same object is placed upon the scale multiple times and each time, the scale displays a different value, the scale is not consistent, therefore, it is not valid.
The study would yield consistent and accurate results when taking place in an isolated environment with control of many variables. When more variables are not under control, the study will not be as accurate. The interview or survey needs to be consistent in the questions given and the environment in which the questions are given, to be considered valid. The participant should be the only thing that changes. The participant is the only thing that can be considered reliable, if their answers are consistent. Therefore, interviews or surveys conflict with Moghaddam’s statement, as the environment cannot change without being considered invalid, and the participant may not give consistent answers, labelling them unreliable.
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