title: IRT test equating in complex linkage plans.
abstract: Linkage plans can be rather complex, including many forms, several links, and the connection of forms through different paths. This article studies item response theory equating methods for complex linkage plans when the common-item nonequivalent group design is used. An efficient way to average equating coefficients that link the same two forms through different paths will be presented and the asymptotic standard errors of indirect and average equating coefficients are derived. The methodology is illustrated using simulations studies and a real data example.
authors.affiliation: Department of Economics and Statistics, University of Udine, Via Tomadini 30/A, 33100, Udine, Italy, michela.battauz@uniud.it.
authors.forename: Michela
authors.initials: M
authors.lastname: Battauz
mesh_terms: D003198:Computer Simulation; D003627:Data Interpretation, Statistical; D006801:Humans; D015233:Models, Statistical; D011594:Psychometrics / Q000379:methods*; D012494:Sampling Studies