So i think the problem is to find good instrument.
Thank you
Il
11.04.2014 09:46 Sven Schreiber ha scritto:
Am 10.04.2014 11:04,
schrieb andrea_conti_86(a)tiscali.it [1]:
> Dear Gretl users, i'm
doing panel regression where i suppose there's a
reverse causality among
independent and dependent variables and I can't find instrument for them
. Does exist a test that tell me if such reverse causality exists?
If I understand your description of the problem correctly, especially
the non-existence of suitable instruments, then you indeed have
a
problem, because a standard test of endogeneity of the
regressors
would
be based on such instruments.
However, if you're already
pretty sure that the instruments are invalid,
aren't you equally sure
that indeed there is "reverse
causality"? If so,
why do you still need
to test? (Half-serious question.)
>
> -sven
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