Task: Question Answering
Input (English): Question: Point out the correct statement about the parent training program created by Barkley: 
 Options:  <1> Its main objective is to improve the social and communication skills of children. <2> Its main objective is to improve the children's self-control skills. <3> Prohibits the use of any type of punishment, including time out. <4> One of its objectives is to reduce the conflicts that may arise in the school context. <5> Sessions are held with the children in parallel with those of the parents.
Output (English): 4