www.cmm.bristol.ac.uk/forum

Addendum: I found another post on this forum, where a similar problem was encountered. Somebody suggested to 'Allow for negative Level 2 variances', which I did. But the final estimate was indeed negative... How is that possible for such a simple model: 2 levels, a single variable? What can ...

In the context of an analysis involving two levels (50 Groups & 1106 Individuals) using a likert scale (0-8) that I consider as a continuous DV, I get the puzzling results: although the averages vary across groups, fitting the Variance Component model (random intercepts) gives a 0.0000000 estimate ...