A meta-analysis of the effects of democratic innovations on participants’ attitudes, behaviour and capabilities

Democratic innovations aim to strengthen citizen participation in democratic decision-making processes. Building on theories of deliberative democracy, participatory democracy and direct democracy, different types of democratic innovations have been developed, ranging from mini-publics, to participatory processes and referendums and citizens’ initiatives. Over the last four decades, an expanding number of scholars have investigated the effects of these democratic innovations on citizens. However, even though a considerable amount of research has been done, there currently exists no overview of the effects of different types of democratic innovations on citizens’ attitudes, behaviour and capabilities. In addition, it is unclear which effects prove robust across studies, and which effects require more investigation.

The aim of this paper is to systematically evaluate what we know and what we do not know yet about the effects of democratic innovations on citizens who participate in them. In order to do so, we conduct a meta-analysis of 100 quantitative empirical studies published between 1980 and 2020. We find, perhaps unsurprisingly, that mini-publics are widely researched for their effects on citizens, whereas studies into the effects of participatory processes and referendums and citizens’ initiatives on participating citizens are much less frequent. We also find that participation in mini-publics changes citizens’ policy attitudes and positively affects citizens’ political attitudes, knowledge, internal efficacy and reasoning skills. For participatory processes, our analyses indicate that they appear to have a positive effect on participants’ political attitudes and knowledge and no effect on participants’ internal efficacy, but there are too few studies to draw robust conclusions. Participation in referendums and citizens’ initiatives appears to have a positive effect on participants’ knowledge and internal efficacy, even though these findings should also be considered preliminary due to the limited number of studies.