[R] heckit with a probit

From: David Hugh-Jones <davidhughjones_at_gmail.com>
Date: Tue 28 Feb 2006 - 06:43:43 EST


Hi

I have data for voting behaviour on two (related) binary votes. I want to examine the second vote, running separate regressions for groups who voted different ways on the first vote. As the votes are not independent, I guess that there is an issue with selection bias.

So, I think I would like to fit a heckit style model but with a binary dependent variable - so, in effect, two successive probits. Is there a way to do it in R? (Alternatively: am I thinking about this the right way?)

Cheers
David



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