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Testing and Measurement

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What is the one of the most significant external influences (examiner or environment) on test results as well as one of the most significant examinee behaviors/conditions that may influence test result. Why is each a significant influencer and what can done to control for each?

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Testing and measurement issues are discussed.

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Let's take a closer look. I also attached an informative article on many types of research bias, some of which this response is drawn.

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1. What is the one of the most significant external influences (examiner or environment) on test results as well as one of the most significant examinee behaviors/conditions that may influence test result. Why is each a significant influencer and what can done to control for each?

One significant examiner behavior is called "experimenter bias", which is a "bias introduced by an experimenter whose expectations about the outcome of the experiment can be subtly communicated to the participants in the experiment" ...

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