Answer:
Voluntary
Explanation:
This is often the most successful kind of treatment, due to the simple fact that the person suffering from a disorder acknowledges that they are not well and want to make themselves better, but recognize that they require help from a professional.
Voluntary treatment along with support from friends and family allow for the patient to accept help while still being a part of their family (a larger society) so they do not feel isolated and are more likely to respond positively to treatment.