TY - JOUR T1 - Assessing the Validity of the Postmaterialism Index AU - Davis, Darren W. AU - Davenport, Christian PY - 1999 SP - 649 EP - 664 JO - American Political Science Review VL - 93 IS - 3 SN - 0003-0554 UR - http://www.jstor.org/stable/2585580 ER -