Object permanence is the understanding that objects and people still exist when they cannot be seen. Described by psychologist Jean Piaget, it usually develops in the second half of the first year; the CDC lists looking for objects dropped out of sight as a milestone by 9 months.
Key takeaways
- Peekaboo becomes exciting as object permanence develops.
- It is linked to the start of separation anxiety.
- It is an important step in memory and thinking.
What you can do
- Play peekaboo and hide toys under a cloth for your baby to find.
- Say goodbye when you leave, so your baby learns you come back.
