Differential Item Function Amplification and Cancellation

Name: Differential Item Function Amplification and Cancellation
Brand: VDM Verlag
SKU: 9783639165494
Price: 1618 CZK
Availability: InStock

Autor: Han Bao

Jazyk:

Vazba: Brožovaná

Vydavatel: VDM Verlag

Dostupnost: U nakladatele na objednávku

Odesíláme za 17-27 dnů

1 618 Kč

Many educational tests use testlets as a way of §providing context. When testlet effect and item §id...

Informace o knize

Autor

Han Bao

Jazyk

Angličtina

Vazba

Kniha - Brožovaná

Vydáno

2009

Stránek

176

EAN

9783639165494

ISBN

3639165497

Enbook ID

06824940

Vydavatel

VDM Verlag

Hmotnost

268

Rozměry

152 x 229 x 10

Kompletní popis

Many educational tests use testlets as a way of §providing context. When testlet effect and item §idiosyncratic features of individual items are both §considered to be the reasons of DIF in many §educational tests using testlets, it is interesting §to investigate the phenomena of DIF amplification §and cancellation resulting from the interactive §effects of these two factors. This research §presented a study based on a multiple-group §testlet item response theory model to examine in §detail different situations of DIF amplification §and cancellation at the item and testlet level using §testlet characteristic curve procedures with signed/ §unsigned area indices and logistic regression §procedure. The testlet DIF model was estimated using §a hierarchical Bayesian framework with the Markov §Chain Monte Carlo method. The simulation study §investigated all of the possible conditions of DIF §amplification and cancellation. Real data analysis §indicated the existence of testlet effect and its §magnitudes of difference on the means and/or §variance of testlet distribution between manifest §groups such as gender or ethnicity.

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Differential Item Function Amplification and Cancellation

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Kompletní popis

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