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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → Treatment of Items to Avoid Violations of Assumptions → Results of NAEP Differential Item Functioning (DIF) Analyses

Results of NAEP Differential Item Functioning (DIF) Analyses

Differential item functioning (DIF) analyses are completed the first time an item is included in a NAEP assessment. Three comparisons are made with each new item: scores of male students versus scores of female students, scores of White students versus scores of Black students, and scores of White students versus scores of Hispanic students. Items that exhibit a strong indication of DIF are labeled "C" for dichotomous items and "CC" for polytomous items. Numbers of new items classified in each DIF category using the Mantel-Haenszel procedure are provided, along with information about items categorized as "C" or "CC".

Links to differential item functioning (DIF) results, main assessments, by subject area: Selected years, 2000-2008
Subject area Year Sample
Arts 2008 R3
Civics 2006 R3
Economics 2006 R3
Geography 2001 R2 R3
Mathematics 2007 R3
2005 R3
2003 R3
2000 R2 R3
Reading 2007 R3
2005 R3
2003 R3
2002 R3
2000 R2 R3
Science 2005 R3
2000 R2 R3
U.S. history 2006 R3
2001 R2 R3
† = Not applicable.
NOTE: Writing assessments did not indicate DIF. R2 refers to accommodations not offered. R3 refers to accommodations offered to students with disabilities (SD) and/or English language learners (ELL) participating in the NAEP assessment.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), Selected Years, 2000–2008 Assessments.

Links to NAEP differential item functioning (DIF) results, long-term trend assessment, by subject area: 2004 and 2008
Subject area Year
Sample
Mathematics long-term trend assessment 2008 R3
2004 R3

Reading long-term trend assessment 2008 R3
2004 R3

NOTE: R3 refers to accommodations offered to students with disabilities (SD) and/or English language learners (ELL) participating in the NAEP assessment.
SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), Long-term Trend Assessments, 2004 and 2008.

Last updated 14 December 2011 (GF)
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