Cognitive
Object Permanence
Typical age: 8 months
Object permanence is the understanding that things still exist even when hidden from view. This cognitive breakthrough usually emerges around 8 months and is why peek-a-boo becomes so exciting: your baby now understands you're still there.
Signs to Look For
- ✓Looks for a toy you've hidden under a blanket
- ✓Enjoys and understands peek-a-boo
- ✓Searches for dropped objects
- ✓Looks toward the door when a parent leaves
When to Talk to Your Pediatrician
Every child develops at their own pace. However, talk to your doctor if you notice:
- •Shows no interest in finding hidden objects by 12 months
- •Doesn't look for toys that fall out of sight
- •No interest in peek-a-boo or hiding games
Keep track of every milestone
Check them off as they happen and see what's coming next, based on the same CDC guidelines.
Open the milestone trackerBased on CDC developmental milestones. This is informational only, not medical advice. Every child develops differently. Consult your pediatrician with any concerns.