 In this connection, it could be argued, apparently contra Stevenson, that attitudes of extreme prejudice are virtually always defended by an appeal to reasons or facts as supporting the prejudicial attitude. A person who has an ethnic or racial prejudice does not simply express his prejudicial attitude but tends to rationalize it by asserting justifying reasons in support of the attitude. It may be true that the demonstration that these reasons are in point of fact false does not customarily lead to the abandonment or withdrawal of the prejudicial attitude. Nonetheless, the phenomenon of rationalization suggests that over the long run, the sustaining of even prejudicial attitudes requires support by reasons. The demonstration that the supporting reasons are factually false tends to bring with it some degree of revision in attitude.