[R-sig-ME] Effect sizes for mixed-effects models

[David Duffy]

> we want to derive the variance related to Cohen’s d for a mixed-subjects design with some participant conducting a task 
> only in the control condition and other participants conducting the task in the control and in the experimental condition 
> (within-subjects design).  

> [...] we only have access to parts of the raw data-sets 

Do you have the raw data or appropriate summary statistics from this mixed-subjects study? Could you get it? I think the "usual" approach would be to use a conservative lower bound for the effective sample size.

Cheers, David Duffy.