New research featuring more than 24,000 people has found that having diverse groups of friends improves well-being and social cohesion, despite people’s tendency to gravitate towards people more similar to them. New research featuring more than 24,000 people has found that having diverse groups of friends improves well-being and social cohesion, despite people’s tendency to gravitate towards people more similar to them. Social Sciences Phys.org – latest science and technology news stories