Bootstrap Equating Errors for the Common-item Nonequivalent Groups Design: A Comparison of Rasch Equating Methods

The nonequivalent groups with anchor test (NEAT) equating design are traditionally based on using a single to adjust for differences in difficulty which is critical forms most large-scale testing programs. When tests differ somewhat content and length, methods the item response theory (IRT) model leads greater stability of results. current study compared standard errors, bias, root mean square errors four Rasch IRT design. sizes were employed all different investigate how may impact accuracy by conducting simulation study.