This page focus on the psychological motivation and cultural mechanism and of politicians.

Self interests overcome public interests as politicians are being payed more, and the when polarization of policy increases. politicians become more opportunistic, when other politicians in the system are opportunistic.<ref>[http://www.cesifo-group.de/portal/page/portal/lang-en/DocBase_Content/WP/WP-CESifo_Working_Papers/wp-cesifo-2004/wp-cesifo-2004-06/cesifo1_wp1228.pdf Politicians’ Motivation, Political Culture, and Electoral Competition]</ref>