26/03/2026
This table says a lot.
Two windows.
Two very different developmental realities.
One system that needs to get both right.
Key differences that matter:
• First 1,000 days (0–2): peak brain plasticity, full dependence, co-regulation
• Second 1,000 days (2–5): identity, autonomy, executive function
• Learning shifts: sensory + imitation → imagination + problem-solving
• Social shifts: attachment → friendships and cooperation
• Parent needs shift: high emotional load → behaviour guidance + transitions
• System shifts: health → early learning and community programs
And importantly:
• Playgroup impact is highest early (attachment, wellbeing, early identification)
• But remains critical later (social skills, learning, school readiness)
The takeaway:
• The first 1,000 days build the brain
• The second 1,000 days build the child
• And both require intentional, connected systems of support
Playgroups are one of the few platforms that span both.
Early.
Universal.
Relational.
Preventative.
If we’re serious about outcomes, we can’t design for one window and hope it carries the other.
We need a continuum.
Read our full Insights Article by CEO Emily Caska here:
https://www.playgroupnsw.org.au/wp-content/uploads/2025/12/INSIGHT-ARTICLE-First-vs.-Second-1000-Days.pdf
