Hi, I try to compare the binomial family (i.e. Logit vs Probit) and in order to do that, I need to make sure that I have the same variance for both link fuction. Therefore, I need to change the link scake "s" of the Logit. By default, it is setted equal to 1 (s=1) and I wanted to set it equal to sqrt(3)/pi. Can you tell me how to do that? Thanks, Nadia -- View this message in context: http://r.789695.n4.nabble.com/My-question-glm-binomial-family-Probit-vs-Logit-tp4705004.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]]