The Legitimacy-conferring Authority of the U.S. Supreme Court

Convention holds that the Supreme Court, because of its special constitutional role, can confer an element of legitimacy on a policy simply by endorsing it. In this study, we conducted an experiment to test the legitimacy-conferring effect of Court rulings on public opinion in two policy areas—affirmative action and regulation of phone rates. We found that in both cases, the Supreme Court had an impact on policy agreement and behavioral intentions that was moderated by other important variables. We conclude that the Supreme Court plays an important role in shaping public opinion and political behavior.