John is conducting research using interviews as his research instrument. He has used the same interview multiple times and has arrived at the same outcome. Which norm of reliability does his research comply with?
a. internal consistency
b. equivalence
c. stability
d. productivity
John's research comply with internal consistency. He used the same research instrument (the same interview) and every time had the same outcome, which means that the results of his research are consistent (they do not change or vary). Internal consistency is the measure based on the correlations between different items on the same test.Because the results are strongly correlated (they are the same) John's research comply with internal consistency.
