Right brain before left brain
Serve-and-return moments (eye contact, soothing touch, mirroring) wire the circuits that later make self-regulation possible. Every “you’re safe, I’m here” is a stress-buffering neural investment.
- • The brain reaches ~85% of adult volume by age three.
- • Right hemisphere dominance: emotion regulation & attachment.
- • Chronic stress during this phase = long-term cortisol dysregulation.