Questions tagged [crossed-effects]

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1answer
35 views

Crossed effects in lmer or lme4

I conducted an experiment where I want to predict response times in a picture classification task from person characteristics (age, prior experience) and item characteristics (similarity; color, shape,...
5
votes
1answer
46 views

Lmer model syntax for a combination of crossed and nested random effects

I'm trying to use the lmer() function in R to specify a particular random effects structure for a model that has four levels: each measurement on a students occurs ...
2
votes
1answer
42 views

How to fit the right cross-classified multilevel model

. I would like to study the link between mortality (outcome and binary variable) and competition between hospitals (Predictor). The competition faced by the hospital is measured by the Herfindahl-...
2
votes
1answer
56 views

Crossed or nested random effects in a repeated measures and a between-subject design?

After reading a lot of material on nested and crossed effects, I am still unsure on whether the random effects in my design are nested or crossed. I would really appreciate advice from some more ...
1
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0answers
27 views

Two factorial time series mixed effect model using lmer

I'm facing a problem regarding the the selection of an appropriate model and right synthax using lmer()-command (lme4-package). But first let me explain the design of the study: Study design: I ran an ...
2
votes
1answer
37 views

Singular fit for a mixed-effects model with crossed design

I have a dataset where different features were measured for three conditions. Each feature consists of sub-features, and sub-features are nested within features. I'm interested in the contrasts cond1 ...
6
votes
1answer
73 views

lme4 - correct formula for a crossed factor nested mixed model

I am having a little trouble verifying correct notation for a crossed factor nested mixed model anova using lme4 package in R. My data is experimental, I applied two crossed treatments (light and ...
0
votes
0answers
18 views

Interaction and Main Effects in mixed effects model - crossed design

We want to run a mixed effects model for our experimental design using lme4 package in R and want to confirm if our model is specified correctly. Our design involves two random factors (participants ...
1
vote
1answer
34 views

Cross-classified mixed models in lme4: How to code cluster variables when there are >2 random intercepts?

Let's suppose that I have a dataset where individual responses to a questionnaire are cross-classified within two grouping variables, G1 and G2. Based on this very informative post, it seems that ...
4
votes
1answer
230 views

crossed random effects with autoregression, glmmTMB

I am working on data that have crossed random effects as well as a autoregressive covariance structure. I would like to check if there is something unlogical about my approach, as the model I would ...
0
votes
0answers
42 views

Generalized linear (logit) mixed-effects model with the random (crossed) effects drawn from a bivariate normal distribution

I am trying to implement a generalized mixed-effects model specified as: Dependent variable $y = \log(\frac{p}{1 - p})$ where $p$ is a quantity measured for a pair of individuals ($i$ and $j$). $E(...
6
votes
1answer
246 views

Bootstrapping with more than one random effect

Consider an experiment with $m$ subjects and $n$ words. Every subject rates every word, producing an $(m \times n)$ data matrix $\hat{X}$. I am interested in forming a confidence interval around $f(\...