He then looks at hostility toward out-groups. Fifty-eight percent do not want homosexual friends, 45 percent think that Jews cannot be trusted, and 54 percent believe that the West is out to destroy Muslim culture. Among Christians, 23 percent believe that Muslims are out to destroy Western culture. Koopmans says these results hold when you control for the varying socio-economic characteristics of these groups (although the analyses are not presented).

Religious fundamentalism is the strongest correlate of out-group hostility both among Muslims and Christians. Fundamentalism here is taken to mean beliefs that believers should return to unchangeable rules from the past, that the Bible/Koran should be taken literally, and that religious rules are more important than secular laws. Although Muslims are more likely to be fundamentalist and hostile toward out-groups than Christians, there are many more Christians in these countries. So, the overall numbers of Christians who feel hostile toward Muslims still vastly outnumber the Muslims who believe the West is out to destroy Muslim culture. This accounts for the success of extremist parties in many of the countries in which the survey was conducted. It may be that Muslim perceptions are partially a response to this but we can’t tell. (The study, as far as I can tell, has little to say about the sources of these attitudes).