Baby Lee Has Just Discovered That Banging on a Big

Multiple Choice

Baby Lee has just discovered that banging on a big pot produces a loud sound. He then decides to bang on a small pot to see what happens. A Piagetian would predict that such active experimentation with the environment would be most likely to first emerge in a child who is

A) 12 hours old.
B) 24 days old.
C) 12 months old.
D) 24 months old.