%0 Journal Article %T Measurement Error and the Structure of Attitudes: Are Positive and Negative Judgments Opposites? %A Green, Donald Philip %A Citrin, Jack %D 1994 %P 256-281 %J American Journal of Political Science %V 38 %I 1 %2 ISSN: 0092-5853 %U http://www.jstor.org/stable/2111344