Webb, N. L., Cohen, A., &
Kang, Taehoon. (2002). A comparison of SSI and non-SSI performance on state
NAEP mathematics assessment items. A paper presented at the American
Educational Research Association Annual Meeting, New Orleans, LA.
investigates whether curricular effects can be attributed to participation
in the Statewide Systemic Initiatives (SSI) program. Methods used to detect
differential item functioning (DIF) usually associated with item-bias were
investigated. Findings indicate that DIF items were present, indicating
that a difference exists in the construct being measured by the state NAEP
between 1990 and 1996.