Connected Milestones
| CDC | Shows defiant behavior (doing what he has been told not to) | 24 months | 
|---|---|---|
| HC | Begins to show defiant behavior | 24 months | 
| PIR | Begins to show defiant behavior | 22 months | 
| CDC | Shows defiant behavior (doing what he has been told not to) | 24 months | 
|---|---|---|
| HC | Begins to show defiant behavior | 24 months | 
| PIR | Begins to show defiant behavior | 22 months |