st: mixlogit and mixlbeta producing the same results

[Erik Monsen <erik.monsen@strath.ac.uk>]

Dear Stata List,

To calculate individual preferences for choice based conjoint data I have collected from 70 respondents who have made 8 choices each, I first run
   mixlogit Choice ECP EWP EFR EJS EJI, group(GID) id(INDID) rand(RR)
to compute the preference scores averaged across all respondents.

To calculate the individual preferences for each of the 70 respondents, and then I run 
   mixlbeta ECP EWP EFR EJS EJI, saving(testfile)

The problem is, mixlbeta assigned all 70 respondents exactly the same set of preference scores, instead of different scores for each respondent. 

How can I modify this command so that different preference scores are reported for each respondent?

I have been combing the net for the answer, but I have not found it yet and would appreciate your help.

I have also tried to run mixlogit separately for each individual respondent, but the results do not converge. 

Any insights to these various issues would be greatly appreciated.

Best Regards, Erik

=============
Dr Erik Monsen
Senior Lecturer and Director of Research 
Hunter Centre for Entrepreneurship
Strathclyde Business School, University of Strathclyde
Room 7.06, Sir William Duncan Building
130 Rottenrow, Glasgow, G4 0GE 

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