Six Stages of Sensorimotor Intelligence
birth to 1 : Reflexes: sucking, grasping, starring, listening
1 to 4 months : The first acquired adaptations: Accommodation and coordination of reflexes.
Stage 3 & 4
Involving Infants responses to objects and people
4 to 8 months :Making Interesting sights last: Playing patty cake.
8 to 12 months : New Adaptation and anticipation:
Stage 5 & 6
More creative, first with actions, then with ideas
12 to 18 months : New means through active experimentation: "Little Scientist"
18 to 24 months : New means through mental combinations: Considering before doing. Remembers what happens before resorting to trial and error