To better understand the consequences of whole or partial reliance on test scores as a screening mechanism for college or university admissions or for job placement or promotion. Copyright (c) 2004 by the Southwestern Social Science Association.

The Laakso-Taagepera index (Laakso and Taagepera, 1979) has become the most commonly used measure to specify the ‘effective’number of political parties in a party system where parties vary substantially in their vote and/or seat shares. It is well known that the Laakso-Taagepera...

While there are many formal models that generate predictions about polarization, only a handful address the question of how, with no change in electoral rules, levels of polarization can dramatically vary over time, as they have in the US House during 150 years of two-party competition. We...

Can political actors use rational strategies for political conflict when established institutions are unavailable to structure political choices because the institutions are themselves among the contested issues? In Soviet politics from 1985 to 1991, cross-cutting cleavages placed in question...