C.B.
At this age most kids are looking for ways to exert their independence & test your boundarires. I suggested to a friend that she turn the door knob on her ds's room around so she could lock it from the outside. He had just moved out of the crib & would not stay in his room to nap. He would be exhausted by the end of the day, (and so was she). This worked. Once he realized she meant business and he couldn't get out to roam the house he started napping again. He's still quite a handful, but at least now he naps.