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Reliability

     

The reliability of a test assesses the extent to which the variation in test scores is due to true differences between people on the characteristic being measured (e.g. abstract reasoning ability, extraversion, etc.) or to random measurement error. Reliability is generally assessed using one of two different methods; one assesses the stability of the test’s scores over time, the other assesses the internal consistency, or homogeneity, of the test’s items.

 
 

 

 
 

 
 

 

   

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