The treatment of substance abuse is one of the most complicated behaviors to bring about effective and lasting change. The author states in Chapter 15: "Failure to identify the contributing and resulting connections between substance abuse and the client's presenting problems with health, the law, money, work, school, society, family, and self will spell a decisive failure in care, however well packaged the plan and well intentioned the delivery". Should human service professionals be required to have additional certification in the treatment of this population? Why or why not? Support your discussion with a minimum of one APA cited scholarly source