'Sending children to day care for large amounts of their youth has shown to be highly detrimental to their development' What are your sources for this claim?

'Sending children to day care for large amounts of their youth has shown to be highly detrimental to their development' What are your sources for this claim? In Sweden 85% of 2 year olds are in day care enabling mothers to work. This has been the case for decades. Source: http://www.keepeek.com/Digital-Asset-Management/oecd/social-issues-migration-health/babies-and-bosses-reconciling-work-and-family-life-volume-4_9789264009295-en#page22 http://www.keepeek.com/Digital-Asset-Management/oecd/social-... If what you claim is true the entire country of Sweden should show adverse affects. It simply does not.