THE COMMITTEE ASSIGNMENT PROCESS AND THE CONDITIONAL NATURE OF COMMITTEE BIAS

The view that congressional committees tend to be biased subsets of their parent chambers provides the foundations for a substantial body of theoretical literature on distributive politics and legislative structure. More recent revisionist work suggests that committees composed of preference outliers are in fact rare. We reject the categorical account of preference outliers a priori and elaborate conditions under which committees should be unrepresentative of their parent chambers. We argue that the most widely available and frequently used data—floor roll call votes—are inappropriate to the task of assessing outlier predictions in any form. Finally, we conduct a differentiated set of hypothesis tests within one policy jurisdiction to illustrate the characteristics of evidence and analysis necessary to evaluate alternative theoretical accounts of legislative organization. The appearance of policy-relevant biases in congressional work groups, we conclude, is not so much rare as it is conditional, and we suggest several conditions on which future models of legislative organization should build. © 1990, American Political Science Association. All rights reserved.