vote independently of each other. Thus, we receive as an empirical result what the previous voting power literature assumed. …

parliaments and facilitate the formation of a coalition government. However, the clauses also introduce distortions and modify the … necessary to measure the difficulties in forming a coalition government and to quantify the effects of electoral thresholds on … these difficulties. For this issue, we introduce a concept based on cooperative game theory which takes into account the …

Experiments evaluate the fit of human behaviour to the Shapley-Shubik power index (SSPI), a formula of voter power … measured power. Chat rooms and processes for selecting subjects reduce or eliminate extraneous forces. Logrolling remains as … values. The SSPI can serve as a control for power imbedded in voting blocs, permitting fuller analysis of other factors that …