An introduction to group diversity, S.G.L. Schruijer and L. Vansina; social diversity - a social psychological analysis and some implications for groups and organizations, J.B. Rijsman; meaningful participation in transnational teams, M. Janssens and J.M. Brett; the transforming international business and transnational teams - commentary on Janssens and Brett, R. Scase; creativity and sex composition - an experimental illustration, S.G.L. Schruijer and L. Mostert; diversity in collaborative task-systems, L. Vansina and T. Taillieu; confronting differences in multi-party forums - commentary on Vansina and Taillieu, B. Gray; participatory policy making - balancing between divergence and convergence, C. Joldersma; participatory policy making divergence and convergence - commentary on Joldersma, M. Stewart; an intervention strategy to managing diversity - discerning conventions, T. Girndt; task and process - a comment on discerning conventions - commentary on Girndt, P. Herriot. Epilogue: book reviews, S.G.L. Schruijer and L. Vansina.