Propensity score matching is starting to become common among IR types  
who use TSCS data.  The studies that I've seen in IR that use it have  
done so uncritically.  In my dissertation, I use matching on TSCS data  
but correct for temporal correlation.  One of the assumptions of  
matching is that observations are independent.  Clearly, most  
observations within a panel are not independent.  This, in my opinion,  
needs to considered, but I'd be interested to hear what others think  
as well.  I'd be happy to share do-files, the dissertation and a  
possible fix for this problem.  There is still the problem of  
potential spatial correlation, which I do not tackle.  The good (bad)  
news is that this should affect all data not just TSCS.

Joe

**********************************
Joseph K. Young
Assistant Professor
Department of Political Science
Southern Illinois University
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http://mypage.siu.edu/jkyoung
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On Sep 25, 2008, at 10:46 AM, Carlos Rodriguez wrote:

> Dear list,
>
> I have the following doubt: is it possible (correct) to do matching
> with time-series cross sectional data?  I have only seen it used with
> panel (cross-sectional) data.
> thanks
>
> carlos
>
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