Here - Tilburg University

More documents

Recommendations

Info

The aim of this study therefore is to compare these packages with respect to parameter estimates and user friendliness. Method and results Datasets were simulated under several conditions with variation in the number of participants. Results from multilevel IRT analyses in different software packages are compared on their precision of estimating parameters, and the time and number of iterations needed for convergence. We started our analysis in GLLAMM (Stata) and as expected we found that the bias of the estimated parameters was smaller in the n = 500 condition than in the n = 150 condition. The time for convergence varied a lot between these different conditions, 1.5 hours and 30 minutes respectively. Our results indicate that using data with a larger number of participants gives better estimates of the parameters, although the time until convergence increases. The results indicate an underestimate of the true parameters in all conditions. We will present a comparison of these results with the performance of other software packages. Keywords: bias, multilevel IRT, simulation, longitudinal, ordinal, quality of life.
Author and presenter Mittelhaëuser, Marie-Anne; <strong>Tilburg</strong> School of Social and Behavioral Sciences/CITO Title Using mixed IRT models and person-fit methods to model motivation: an application in educational measurement Abstract The goal of the current study was to compare a linking procedure for two test forms using different types of common items. It was hypothesized that the test-taking condition of the common items influences the linking procedure. The results support the hypothesis. A mixed Rasch model was used to model some examinees as being more motivated than others to solve the items. Removal of aberrant item-score vectors or items displaying differential item functioning did not improve the linking procedure.
Page 1 and 2:
The ASA Spring Methodology Conferen
Page 3 and 4:
Friendships under study were formed
Page 5 and 6:
the interplay of social background
Page 7 and 8:
greatly inefficient. Only very few
Page 9 and 10:
Data We use matched employer-employ
Page 11 and 12:
KEY NOTE SPEAKER Snijders, Tom A.B.
Page 13 and 14:
Presenter Hagenaars, Jacques A.P.;
Page 15 and 16:
Presenter Croon, Marcel; Tilburg Sc
Page 17 and 18:
Author and presenter Kuijpers, Rens
Page 19 and 20:
Author and presenter Forcina, Anton
Page 21 and 22:
Author and presenter Roverato, Albe
Page 23 and 24:
Author and presenter Ark van der, A
Page 25 and 26:
Author and presenter Fairbrother, M
Page 27 and 28:
model are evaluated. Special attent
Page 29 and 30:
Presenter Bennink, Margot; Dept. Me
Page 31 and 32:
Presenter Züll, Cornelia & Scholz,
Page 33 and 34:
Author and presenter Hoffmeyer-Zlot
Page 35 and 36:
The ASA Spring Methodology Conferen
Page 37 and 38:
Author and presenter Mui, Phoebe; T
Page 39 and 40:
Author and presenter Koppenol-Gonza
Page 41 and 42:
similar multi-trait multi-method de
Page 43 and 44:
Presenter Engel, Uwe; Dept. of Soci
Page 45 and 46:
Presenter Schnell, Rainer; Institut
Page 47 and 48: References: Razum, Oliver; Zeeb, Ha
Page 49 and 50: The ASA Spring Methodology Conferen
Page 51 and 52: the resulting prevalence estimates
Page 53 and 54: Presenter Kaczmirek, Lars; GESIS -
Page 55 and 56: Presenter Storfinger, Nina; Univers
Page 57 and 58: Presenter Engel, Uwe; Dept. of Soci
Page 61 and 62: Presenter Lochner, Katharina; cut-e
Page 63 and 64: efore retirement. We identify four
Page 65 and 66: provides an alternative interpretat
Page 67 and 68: Author and presenter Lospinoso, Jos
Page 69 and 70: Author and presenter Huisman, Mark;
Page 73 and 74: Author and presenter Wetzels, Ruud;
Page 75 and 76: Presenter Wesel van, Floryt; Dept.
Page 77 and 78: Author and presenter Kampen, Jarl;
Page 79 and 80: Author and presenter Noack, Marcel;
Page 81 and 82: Presenter Blettner, Daniela P.; Dep
Page 83 and 84: Presenter Morren, Meike; Tilburg Sc
Page 85 and 86: Presenter Beuckelaer De, Alain; Rad
Page 87 and 88: Presenter Kankaraš, Miloš; Dept.
Page 91 and 92: Presenter Busse, Britta; Darmstadt
Page 93 and 94: Author and presenter Nieuwenhuyze,
Page 97: Author and presenter Gorter, Rosali
show all

Here - Tilburg University

Create successful ePaper yourself

Delete template?

Save as template?