On Wed, 7 Jan 2015, Summers, Peter wrote:
Hi Sven,
Yes, it was marked as discrete. I agree with you that this should be
necessary for proper ordered probit behavior.
I have no idea of the actual problem, but if your dependent variable is
measured on a non-arbitrary scale, then you probably need interval
regression, rather than ordered probit.
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Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
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