Hello
I am puzzling on how to run the regression that has
the nature of dual casulity within a set of panel
data. Which econometric model shall I use?  How to
perform the test with Stata?
For example, we need know the relation between
varaibles A and B. We understand A causes B and B also
causes A.  We are estimating the regression relation
A=c+ b* B + Control Variables+ e .  However, the
endogenity problem of B has to be taken care of. How
can we do it cleanly?
Your response is appreciated. 
William 
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/