Scientists are genuinely divided on this question.

What's still open

What the evidence found 3 findings
Based on 14 sources:
PMC (PubMed Central) peer-reviewed View
Administration for Children and Families institutional View
Science Direct peer-reviewed View
PMC research article peer-reviewed View
National Academies of Sciences institutional View
AEFP Live Handbook institutional View
PMC/NCBI peer-reviewed View
ResearchGate peer-reviewed View
EurekAlert news View
PMC peer-reviewed View
SAGE Journals peer-reviewed View
PMC - NIH peer-reviewed View
ResearchGate peer-reviewed View
PMC - NIH peer-reviewed View
Based on 15 sources:
PMC article peer-reviewed View
PMC article peer-reviewed View
Institute for Family Studies blog View
NICHD Study of Early Child Care and Youth Development institutional View
NICHD newsroom release on child care and behavior institutional View
NICHD Study of Early Child Care institutional View
Prosocial and Aggressive Behavior: A Longitudinal Study - PMC - NIH peer-reviewed View
Child-Care Effect Sizes for the NICHD Study of Early Child Care peer-reviewed View
Child-care effect sizes for the NICHD Study of Early Child Care and Youth Development peer-reviewed View
American Economic Association peer-reviewed View
Thomas B. Fordham Institute institutional View
PubMed peer-reviewed View
Institute for Family Studies blog View
PMC/NCBI peer-reviewed View
Child Care Canada institutional View
Based on 14 sources:
PMC (PubMed Central) peer-reviewed View
Starglow Media blog View
VNA Health Group institutional View
PMC - NIH peer-reviewed View
Science Direct peer-reviewed View
PMC - NIH peer-reviewed View
PMC Journal Article peer-reviewed View
PMC Journal Article peer-reviewed View
Oxford Academic Book Chapter peer-reviewed View
PMC (PubMed Central) peer-reviewed View
Journal of Family Theory & Review peer-reviewed View
PMC (PubMed Central) peer-reviewed View
PMC Article on Child Care Arrangements peer-reviewed View
NWCommons Educational Research institutional View
What research hasn't answered 3 gaps
PMC article peer-reviewed View
PMC article peer-reviewed View
Institute for Family Studies blog View
NICHD Study of Early Child Care and Youth Development institutional View
NICHD newsroom release on child care and behavior institutional View
Sources 20 findings
argumentation Unknown
argumentation Unknown
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
NICHD argumentation
1997 tree-leaf argumentation
tree-leaf argumentation
tree-leaf argumentation
argumentation Unknown
argumentation Unknown
argumentation Unknown
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Generated by reaso.ai's editorial pipeline: claim restated, scientific consensus classified via 3-run majority vote, 20 findings enriched with attribution and study type, narrative written in neutral voice. No individual researcher has signed off on this specific analysis — see methodology for how the pipeline works. Built with Claude Sonnet by Anthropic. Updated April 16, 2026. How we do this →

Written by AI. Sources are linked for verification.