Re: [R] Multilevel models

Dear Saul, The most commonly used mixed-effect models software in R, in the lme4 and nlme packages, use the Laird-Ware form of the model, which isn't explicitly hierarchical. That is, higher-level variables are simply invariant within groups and appear in the model formula in the same manner as

[R] Multilevel models

Hello, I have data with workers within departments. I am interested in testing the effects of peers' satisfaction on employees' productivity. To assess peer satisfaction, I calculate, for each employee, the average satisfaction of the employees' peers within the department. In other words, I calcu

[R] Multilevel models with sampling weights at both levels

Greetings, Is there a package in R that will run multilevel models (e.g. students nested in schools) where sampling weights can be employed at both levels? Thanks in advance. David -- === David Kaplan, Ph.D. Professor Department of