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Believe that separation will have positive effect on own physical security

It is conceivable that respondents with negative attitudes toward
Southerners are more likely to recall or falsely claim that they were
victimized by Southerners during the 2005 riot. This kind of
measurement bias is a challenge in any survey research. While we
cannot rule out the possibility, we believe this is not a major problem
in our case, for three reasons. First, we spaced survey questions so
that respondents were asked about the riot about three dozen
questions after they were asked their views on separation, citizenship,
and the prospects for peace, in order to minimize the chance that
respondents’ expressed political views would prime them to (perhaps
falsely) report riot exposure. We sequenced questions in this way in
order to ensure that measured differences in political opinion could
be attributed to riot exposure itself as opposed to being reminded
about one’s riot exposure by a preceding survey question. Second,
political attitudes were recorded by subjects themselves, so that they
would have no incentive to justify anti-Southern views to enumerators by claiming that Southerners harmed them during the riot.
Third, respondents were not asked to self-identify as victims or
targets of the riot, but they were asked factual questions (whether
there was fighting in their neighborhood, they were physically
injured, lost a job, etc.) in order to gauge their riot exposure, which
should reduce differential recall or false victimization claims.
27In the lead-up to the referendum, the events of ‘‘Black
Monday’’ became a rallying cry for some Northern hard-liners,
especially Al-Tayeb Mustafa, the uncle of Sudan’s President
Bashir and owner of one of the most widely read newspapers
in Khartoum, Al-Intibaha. Mustafa regularly invoked the riots as
evidence that Northerners and Southerners could not live
together. However, we do not find evidence in our empirical
analysis that the effect of riot exposure on support for partition is
conditional on getting news from Al-Intibaha, nor is reading AlIntibaha a significant correlate of support for separation