They find that income
inequality, inflation, literacy, and an interaction term between literacy and repression, all have positive
and significant effects on terrorism, that it is hard to say anything definite about the effect of income
per capita on terrorism, that poverty does not seem to matter, and, finally, that terrorism is related to
repression in a non-linear hump shaped fashion, suggesting that that greatest amounts of terrorism tend
to occur in countries that govern within the intermediate range of repression.