This research investigated the mechanisms involved in the hostile medi
a effect, in which partisans tend to judge news coverage as biased aga
inst their own side. Subjects on both sides of the Israeli-Palestinian
conflict and the abortion issue were shown television news coverage o
f both issues. They were then tested for memory of program content and
judgments of bias and imbalance in coverage. Mideast partisans judged
coverage to be biased against their own side, replicating previous fi
ndings; abortion partisans showed a much less consistent pattern of ho
stile media judgments. Prior beliefs about media bias, together with i
ssue attitudes, were found to account for hostile media judgments. Sub
jects also tended to selectively categorize specific items in a direct
ion favorable to their attitude, a process tending to inhibit hostile
media judgments. (C) 1994 Academic Press, Inc.