Local Independence and Q3 Values: How much Matters?

• In Event: GSIC Poster Session I

Abstract

A value of .2 on Yen’s Q3 (1993) is often used to identify violations of local independence large enough to be of concern. Preliminary results suggest that even Q3 values below .2 can yield biased reliability and parameter estimates, with impacts slightly more severe in larger groups of dependent items.

Authors

• Kelsey Nason, James Madison University

• Christine DeMars, JAMES MADISON UNIVERSITY