Humans are born with billions of neurons that need connecting – and how those synapses develop helps determine how our brains will work. There is ample evidence that a loving, nurturing environment in infancy and early childhood provides the most fertile ground for brain development.

Isabelle Hau, executive director of the Stanford Accelerator for Learning, explains why a well-loved baby or child simply learns better than a neglected one, and how our contracting social circles endanger our kids.

Plus… the mystery of why average IQs rose for decades, until recently. Are technology and isolation affecting our intelligence?

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For more about Weill Cornell Medicine Neurological Surgery, please visit https://neurosurgery.weillcornell.org