Re: st: gologit2

[lan zhang <cat1984@126.com>]

On Aug 28, 2013, at 10:41 AM, Maarten Buis <maartenlbuis@gmail.com> wrote:

> On Wed, Aug 28, 2013 at 3:51 PM, lan zhang wrote:
>> i want to conduct a gologit2 model, however, the correlations between my independent variables are very high, almost 0.9. Is it still possible for me to use the gologit2 model?
> 
> If the correlation is that high you first need to ask why that might be.
> 
> For example, it could be these variables are just different ways of
> measuring the same thing. In that case you should not add them all to
> the model. Say, we think that occupation and education are different
> ways of estimating socioeconomic status. If we add both to our model,
> we would get effects of one approximation of status while adjusting
> for another approximation of that same status. That would not make any
> sense. However, this is only true if we think that these are both
> measuring the same concept. If we think that there are different
> dimensions of socioeconomic status, say an economic dimension captured
> by occupation and a cultural dimension captured by education, adding
> both to your model would again be perfectly fine and actually
> desirable. So the real question remains: why is that correlation so
> high?
> 
> -- Maarten
> 
> ---------------------------------
> Maarten L. Buis
> WZB
> Reichpietschufer 50
> 10785 Berlin
> Germany
> 
> http://www.maartenbuis.nl
> ---------------------------------
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