On the Left and Right ideological divide. Historical accounts and contemporary perspectives

Left and right are viewed as social constructs that serve to orient and to bind people to political choices over the last two centuries mostly within established Western liberal democracies. Their contents and functions, however, have not been invariant across polities but were largely shaped in accordance with the distinctive characteristics of societies and of political systems in which they operated. Thus, one can't avoid addressing left and right under an historical perspective to make sense of their different expressions and to better appreciate their functions. Recent findings have shown that individual differences in personality traits, basic values, and core political values account for a significant portion of preference for left and right across several polities. It has been argued that affinities between individual differences in personality and political preferences have developed over time under conditions of choice in which people's dispositions and value priorities could meet contingent political offers. Time and opportunities of free choice made possible the establishment of distinctive ideological identities that ultimately find their roots in people's personalities. Novel findings document the function that left and right still can play in predicting political preference and in summarizing political attitudes as stable social postures that account for the encounter of personality and politics.