You compare a student's scores on reading and math tests. So, what you are really interpreting is a difference. What would you expect the reliability of the difference to be in comparison to the reliabilities of the reading and math tests? Reliability of the difference is likely ___

Question

Quizplus · Accepted Answer

The reliability of the difference between two scores is generally lower than the reliabilities of the individual scores themselves due to the introduction of additional error variance when calculating the difference.

You Compare a Student's Scores on Reading and Math Tests