Traditional comparative studies of parliaments have focused on constitutional and organizational characteristics of parliaments, or differences in the historical contexts, in which legislative assemblies have developed. The motivations of individual Members of Parliament have been neglected. This volume provides empirical work on legislative role orientations and behaviour in six West European parliaments: Belgium, Denmark, Germany, the Netherlands, Norway and the United Kingdom. All contributions present a wealth of empirical findings on parliamentarians’ role orientations in different institutional contexts.