Mplus is quite popular in social sciences. From what I understand its main functionality is fitting Latent Variable Models and structural equation modelling. I've never used it myself, but it can in fact do things for which it is hard to find R packages at this point.
Comments
Here is a nice 4-year old still active discussion on pros and cons of different data analysis technologies: http://brenocon.com/blog/2009/02/comparison-of-data-analysis...
HellMcFly--you're hellbanned so I couldn't reply directly. What is MPlus?
Mplus is quite popular in social sciences. From what I understand its main functionality is fitting Latent Variable Models and structural equation modelling. I've never used it myself, but it can in fact do things for which it is hard to find R packages at this point.