Forms of democracy and economic growth volatility

Using a panel of 140 countries over the 1975-2007 period, we disaggregate democracies across five institutional dimensions (government forms, electoral rules, state forms, number of veto players, and age of democracies), to study the precise forms of democracy that may explain the lower economic growth volatility (EGV) in democracies compared to dictatorships, usually emphasized by the literature. We find that, while all government forms decrease EGV to the same extent, proportional electoral rules outperform majoritarian and mixed electoral rules, suggesting a role for a more inclusive political decision-making process. In addition, EGV is significantly lower in unitary states, suggesting a role for a limited separation of power between the central government and the local authorities, while the effect of the number of veto players and the age of democracies is significant only in developed countries. Consequently, the choice between various forms of democracy may not be neutral for EGV, and, possibly, for countries' development path.