J was sitting on the patio chair sans a booster seat having a snack
when he realized the low seat/high table was a great opportunity for one of his favorite games: peek-a-boo!
First he ducked his head under the table.
Where's the baby?
By spontaneously playing this game with me, J is showing his mastery over object permanence, which typically develops around 9 months. And to think, I would have completely missed this adorable cognitive display had he sat in his booster seat. :)