1. You come home from work and put down your things. As you walk into the kitchen, you can hear your car door unlocking and relocking, with the ’beep’ that indicates the doors are locked. You discover that your son Carson, who is 22 months old, has picked up your keys and is pressing the lock and unlock buttons on the remote, laughing every time the car horn beeps. You would say that your son is engaged in what Piaget referred to as ____.