Describe one of the following three ways to assess reliability of a research instrument in your own words. How would you assess for this type of instrument reliability in a published research study?  

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A test-retest method is one of the ways to evaluate a research tool’s reliability. In this case, the test-retest reliability involves administering a measure twice with a time interval in between and comparing the results. It is assumed that if there is high consistency in the two data sets, then this instrument will be reliable at measuring what it was intended to measure.

If you want to know if an instrument is reliable, look first at the length of time between administrations. Generally speaking, shorter intervals tend to be more accurate as they allow for less opportunities for any changes or influences to affect people’s responses . In addition, it is important to check if appropriate statistical tests like correlation have been used in analyzing similarities and differences. Researchers should also provide proof of their results’ correlation with other studies to demonstrate their reliability.