Beretvas, Susan Natasha (contributor) - 2010
This simulation study compared the performance of two multilevel measurement testlet (MMMT) models: Beretvas and Walker … (including testlet length, sample size, and the pattern of the testlet effects) to assess the impact on the estimation of fixed …, testlet item scores violate the assumption of local item independence (LID) underlying item response theory (IRT). Modeling …