Insecurity, anxiety.
Fear of new abandonment.
Loyalty conflicts with their caretaker.
Sibling jealousy.
Verbal and physical aggression.
Rejection by the adoptive mother.
Self-destructive behavior.
Language barrier.
Exhibitionism, sexual games.
Voracious intake of food.
Opposition.
Restlessness, hyperactivity.
Difficulty obeying norms.
Sleep disorders.