Gee, look at the list of authors. But then if you want to control people and express your morality about what and who is "normal", they've proven how to do it, fudge the numbers and dismiss the criticism. Simply ignore the truth and reality and use your professional creditials to ensure you're right. Not hard if you don't want to change your mind and you want to reassure a bunch of old white men (APA) that their worse fears, their definition of normal, isn't in jeopardy, and they can keep calling their morality science and calling others mentally sick.
Remember they're not in business to care for people, but to think they cure people of imaginary diseases. They are ethicially bankrupt and they know it. They know to be important and exercise power and control they have to invent diseases and label people. How or why else would they exist?