Research by Microsoft suggests that distributed development has no impact on various software quality measures (bugs, code churn, complexity, etc).  See: <a href="http:&#x2F;&#x2F;research.microsoft.com&#x2F;apps&#x2F;pubs&#x2F;default.aspx?id=102351" rel="nofollow">http:&#x2F;&#x2F;research.microsoft.com&#x2F;apps&#x2F;pubs&#x2F;default.aspx?id=1023...</a>