The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON BUSINESS AND ECONOMICS
Transactions ID Number: 27-221
Full Name: Monica Raileanu Szeles
Position: Associate Professor
Age: ON
Sex: Female
Address: Lamaitei str. 59 Brasov 2200
Country: ROMANIA
Tel: 0040722355979
Tel prefix: 0040 268 419304
Fax: 0040 268 419304
E-mail address: monica.szeles@unitbv.ro
Other E-mails:
Title of the Paper: On testing and estimation in the economic measurement, when using item response models
Authors as they appear in the Paper: Monica Raileanu Szeles
Email addresses of all the authors: monica.szeles@unitbv.ro
Number of paper pages: 11
Abstract: This paper applies the one and two parameter- item response models (IRT) with a probit link to derive a scale of financial precariousness. A strong focus is on the item testing and selection, which is sometimes ignored in the IRT literature. In order to test whether the items fulfil or not the IRT fundamental assumptions, a number of tests are applied. The Mokken Scale is the most comprehensive one and provides the most complex output. Also, the paper highlights the advantages of using the IRT instead of traditional models when deriving latent measures from a set of observable binary indicators. This is often the case in the economic and social fields where the IRT is rarely used. Using both IRT models and some testing procedures, we derive a scale of four items and estimate item parameters. In the empirical part, the IRT models are applied on data from the Luxembourg socioeconomic panel (PSELL-3, wave 2006) using the modules GLLAMM (for running the IRT models) an!
d msp/loevH (for testing the items) in the statistical package STATA. The software and modules allowing the application of the IRT models and its underlying tests are also examined. At the end, the paper leads to both empirical and methodological conclusions.
Keywords: Item Response Theory, Scale of deprivation, Tests, Difficulty, Discrimination, Parameter, Score
EXTENSION of the file: .doc
Special (Invited) Session: Exploring the extension of the item response theory to the economic and social measurement
Organizer of the Session: 591 332
How Did you learn about congress: Silviu Dumitrescu silviurazvandumitrescu@yahoo.com
IP ADDRESS: 82.79.170.91
