[R] Generalized Ordered Logit in R

[B. Longhurst]

Dear community,

I am replicating a paper (The Effect of Structures and Power on State 
Bargaining Strategies, http://tinyurl.com/oyk289c) for a class project. 
The author used “gologit” in STATA, and I need the equivalent function 
in R. She used a “Generalized Ordered Logit” (see below model 
description).

Can you run a “generalized ordered logit” with glm? I could not find the 
specification in the help file for the function. Or is there another R 
package for it?

The data can be accessed here: http://tinyurl.com/oydwl4d (McKibben_AJPS 
Bargaining Strategies data.tab)

The results should look like this: 
http://s17.postimg.org/3zldxs133/Brooke.png

Thank-you so much for your help. It is greatly appreciated.

Kind Regards,

Brooke


Model Description from the original paper:

To test the effects of the bargaining structure against more standard 
explanations of variation in state bargaining behavior, I estimate two 
generalized ordered logit models with clustered standard errors. Model 1 
includes lnGDP, focusing on states capabilities as the central measure 
of their power, and Model 2 includes the alternative, Voting power 
index. While standard ordered logit models might appear to be the 
appropriate statistical technique, the data violate the assumption of 
proportional odds that underpins these models. In other words, all 
independent variables do not exert the same effect across all categories 
of the dependent variable. The generalized ordered logit model relaxes 
this assumption, allowing the effects of the independent variables to 
vary across the different cate- gories of cooperative bargaining 
behavior. Standard er- rors were also clustered by negotiation phase to 
deal with the fact that each state’s choice of bargaining behavior 
within a given bargaining interaction is dependent on the choices of 
other states. (These models were estimated using the gologit2 command in 
Stata)