Why do humans, especially children, develop behavioural disorders?

Question: Why do humans, especially children, develop behavioural disorders?
- Keywords:
  behaviour,
  health
Asked by anon-229161 to Sophie, Jolel, Emily, Amber, Alex on 15 Nov 2019.
- Jolel Miah answered on 15 Nov 2019:
  
  from experience it’s all about exposure to the environment, if they have traumatic upbringing, the wiring can get tangled in all sorts of ways and becomes harder sort out as people get older. However, this is not true for every case.

Question: Why do humans, especially children, develop behavioural disorders?