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Re: st: How I can run a tree regression model in Stata
At 11:14 PM 12/11/2006, Quang Nguyen wrote:
Dear Richard el al,
Thanks so much for your reply. You raised an excellent question.
Actually, the colors represents the characteristics of the players by
ethnicity and income level. For instance, "white" represents for
Rich_Vietnamese, "black" represents for Poor_Vietnamese and so on. The
main research question is to see how individual's perception on income
an dethnicity might have effect on the "cooperation/coordinating"
behavior. For instance, the rich might be more willing to cooperate
with the poor for upward social comparision reason.
To further clarify - you originally said players are "required" to
vote based on the characteristics of others. But, the above makes it
sound like they are not required to do so. Rather, you want to test
whether the ethnic and economic characteristics of others will affect
the vote? Or, perhaps you could say they are required to vote based
on characteristics, but it is up to them to decide how to do so.
The color coding seems to confound the effects of race and
income. For each of the other 2 players, I'd be inclined to code
their race and income separately. You could then compute
interactions if you thought it might be appropriate or necessary.
I'm still not clear on how to set everything up, but I definitely
don't see how this would be a regression problem. What would the
continuous dependent variable be? Every possible dv presented so far
has 3 categories.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
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