Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.

Applying linear mixed effects regression (LMER) models to psycholinguistic data was made popular by Baayen, Davidson, and Bates (2008). However, applied researchers sometimes encounter model specification difficulties when using such models. This article presents a multilevel specifica...

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Main Author: Hsiu-Ting Yu
Format: Article
Language:English
Published: Université d'Ottawa 2015-06-01
Series:Tutorials in Quantitative Methods for Psychology
Subjects:
Online Access:http://www.tqmp.org/RegularArticles/Vol11-2/p078/p078.pdf
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author Hsiu-Ting Yu
author_facet Hsiu-Ting Yu
author_sort Hsiu-Ting Yu
collection DOAJ
description Applying linear mixed effects regression (LMER) models to psycholinguistic data was made popular by Baayen, Davidson, and Bates (2008). However, applied researchers sometimes encounter model specification difficulties when using such models. This article presents a multilevel specification of LMERs customized for typical psycholinguistic studies. The proposed LMER specifications with crossed random effects allow different combinations of random intercept effects or random slope effects to be specified directly for subject and item covariates. As a result, this approach allows researchers to describe, specify, and interpret a wide range of effects in an LMER more easily. Next, the syntax and steps involved in using the PROC MIXED procedure in SAS to fit the discussed models are illustrated. Thirdly, various issues relating to model selection, specifically for the random component of LMER models with crossed random effects, are discussed. Finally, this article concludes with remarks about model specification and selection of the random structure in the context of analyzing psycholinguistic data using LMERs specifically. This paper provides readers conducting psycholinguistic research with a complete tutorial on how to select, apply, and interpret the multilevel specification of LMERs.
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spelling doaj.art-daa3d41ef44c4ca9bae13d6c05fe31c72022-12-22T02:52:36ZengUniversité d'OttawaTutorials in Quantitative Methods for Psychology1913-41262015-06-011127888Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.Hsiu-Ting Yu0McGill UniversityApplying linear mixed effects regression (LMER) models to psycholinguistic data was made popular by Baayen, Davidson, and Bates (2008). However, applied researchers sometimes encounter model specification difficulties when using such models. This article presents a multilevel specification of LMERs customized for typical psycholinguistic studies. The proposed LMER specifications with crossed random effects allow different combinations of random intercept effects or random slope effects to be specified directly for subject and item covariates. As a result, this approach allows researchers to describe, specify, and interpret a wide range of effects in an LMER more easily. Next, the syntax and steps involved in using the PROC MIXED procedure in SAS to fit the discussed models are illustrated. Thirdly, various issues relating to model selection, specifically for the random component of LMER models with crossed random effects, are discussed. Finally, this article concludes with remarks about model specification and selection of the random structure in the context of analyzing psycholinguistic data using LMERs specifically. This paper provides readers conducting psycholinguistic research with a complete tutorial on how to select, apply, and interpret the multilevel specification of LMERs.http://www.tqmp.org/RegularArticles/Vol11-2/p078/p078.pdfModel selectionlinear mixed effects modelrandom effectspsycholinguistics
spellingShingle Hsiu-Ting Yu
Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.
Tutorials in Quantitative Methods for Psychology
Model selection
linear mixed effects model
random effects
psycholinguistics
title Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.
title_full Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.
title_fullStr Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.
title_full_unstemmed Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.
title_short Applying Linear Mixed Effects Models with Crossed Random Effects to Psycholinguistic Data: Multilevel Specification and Model Selection.
title_sort applying linear mixed effects models with crossed random effects to psycholinguistic data multilevel specification and model selection
topic Model selection
linear mixed effects model
random effects
psycholinguistics
url http://www.tqmp.org/RegularArticles/Vol11-2/p078/p078.pdf
work_keys_str_mv AT hsiutingyu applyinglinearmixedeffectsmodelswithcrossedrandomeffectstopsycholinguisticdatamultilevelspecificationandmodelselection