Does a society becoming more diverse tend to dumb down the society?

A society becoming more diverse does not inherently lead to a "dumbing down" of the population. Diversity can enrich social, cultural, and intellectual life by introducing new perspectives, ideas, and innovations. However, challenges such as communication barriers or social tensions can arise if integration and understanding are not fostered. Ultimately, the impact of diversity on a society's intelligence and capabilities depends on how well it manages and embraces that diversity.