st: (non-Stata) mixture of probits

["FEIVESON, ALAN H. (AL) (JSC-SK) (NASA)" <alan.h.feiveson@nasa.gov>]

Hello - Does anyone know of work on a probit-like model that uses a mixture
of two normals, rather than one normal distribution as the latent variable
distribution? If so, is there an extension to random effects?

P(Y = 1 |X) = norm(Xbe + e) where e ~ mixture of two normals



This would arise if e comes from one of two populations depending on another
unobservable dichotomous RV.

Al Feiveson
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