Previous research has demonstrated that differential item functioning (DIF) methods that do not account for multilevel data structure could result in too frequent rejection of the null hypothesis (i.e., no DIF) when the intraclass correlation coefficient (r) of the studied item was the same as the r of the total score. The current study extended previous research by comparing the performance o…
Previous research has demonstrated that differential item functioning (DIF) methods that do not account for multilevel data structure could result in too frequent rejection of the null hypothesis (i.e., no DIF) when the intraclass correlation coefficient (r) of the studied item was the same as the r of the total score. The current study extended previous research by comparing the performance o…