Therapists often will not prematurely diagnose or label adolescents as this may do more psychological harm than good in the long run. In addition, therapists will often involve the adolescent's family. Naturally, the family can be a powerful support system and agent of change in the adolescent's development. In particular, those therapists who are trained in Family Systems theory - which focuses on the role of the family as a whole who works together to maintain a balance (whether functional or dysfunctional) - will strive to involve the entire family in treatment.