The paper revisits the work of Sommers and Suits on net interstate migration in the USA. Adopting the same framework, consideration is given to the effects of differences in income, welfare expenditures, employment opportunities and 'regional preferences' on the behaviour of migrants in the...

Recent panel data is used to reconsider the determinants of interstate differences in the ratio of insured to total unemployment. It is concluded that previous research on the influence of replacement rates, duration of jobless spells and female labour force participation is robust, but it is...

The prisoner's dilemma (PD) is played by two players in each of two groups. The two groups compete for an external prize whose allocation is determined by the degree of within-group coordination. The experimental evidence supports the predictions of multilevel game theory well.