TY - JOUR T1 - Opinion polarization: Important contributions, necessary limitations AU - Evans, John H. AU - Bryson, Bethany AU - DiMaggio, Paul PY - 2001 DO - 10.1086/320297 SP - 944 EP - 959 JO - American Journal of Sociology VL - 106 IS - 4 SN - 0002-9602 ER -