If a more diverse team caused increase output and better results we really should have that as common hiring policy in state and government. Since here in Sweden about 90% of the population work in gender segregated professions, and in particular state and government positions tend to have exceptional high segregation, it would make sense that their hiring policy should reflect a goal for diversity. Many of the professions with 90%+ gender segregation also exist in health care and education which is both areas which many feel need improvement in output and results. I would assume that the benefit of improved diversity increase as gender segregation goes towards 100%.

Odd that they haven't done this already.