Respondents who have diverse neighbors and talk to them on a regular basis are significantly more trusting than those who have diverse neighbors and do not talk to them. (p. 68)Författarna menar till och med att studien talar emot att det skulle röra sig om omvänd kausalitet, dvs att tillitsfulla råkar vara de som pratar med sina etno-grannar. De är väl inte helt övertygande, men de ägnar åtminstone ett stycke åt frågan. (Nix, ingen fancy IV-skattning för att slå spiken i kausalitetskistan, det är ju Political Studies vi pratar om :-)
Så här diskuteras kausaliteten i uppsatsen:
An obvious alternative interpretation of this finding involves reverse causation.
How do we know it is the talking that matters here? The reverse could also be
true – trusting respondents are perhaps the ones who are more talkative with their
neighbors, whereas distrusting respondents remain quiet.
As it happens, the
correlation between the two variables talking and trusting is only 0.04, and it is
not significant in the ethnic-majority sample. In other words, trusters are not
necessarily talkers. Perhaps distrusters are less talkative in adiverse context than
trusters? Although it is generally true that there is a little less talking in the diverse
neighborhood context, the propensity to talk does not vary by levels of trust.That
is, trusters and distrusters alike talk least when the racial or ethnic background of
neighbors is mostly or entirely different from their own.
Finally, in racially homogeneous contexts there is essentially nodifference in trust levels between talkers and non-talkers. Accordingly, we have a strong primafacie case for the causal mechanisms we describe.
(p.70-71)