TY  - JOUR
A1  - Schweizer, Karl
A1  - Reiß, Siegbert
A1  - Ren, Xuezhu
A1  - Wang, Tengfei
A1  - Troche, Stefan
T1  - Speed effect analysis using the CFA framework
T2  - Nature Communications
N2  - The paper outlines a method for investigating the speed effect due to a time limit in testing. It is assumed that the time limit enables latent processing speed to influence responses by causing omissions in the case of insufficient speed. Because of processing speed as additional latent source, the customary confirmatory factor model is enlarged by a second latent variable representing latent processing speed. For distinguishing this effect from other method effects, the factor loadings are fixed according to the cumulative normal distribution. With the second latent variable added, confirmatory factor analysis of reasoning data (N=518) including omissions because of a time limit yielded good model fit and discriminated the speed effect from other possible effects due to the item difficulty, the homogeneity of an item subset and the item positions. Because of the crucial role of the cumulative normal distribution for fixing the factor loadings a check of the normality assumption is also reported.
KW  - processing speed
KW  - normal distribution
KW  - structural validity
KW  - omissions
KW  - model of measurement
Y1  - 2019
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/48807
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-488076
SN  - 2041-1723
N1  - Copyright © 2019 Schweizer, Reiß, Ren, Wang and Troche. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
VL  - 10
IS  - Art. 239
SP  - 1
EP  - 11
PB  - Nature Publishing Group UK
CY  - [London]
ER  -