I am perennially asked whether I do or do not “believe” in autism. I suspect that on most occasions, it’s a test. Nonetheless, it’s a fair question that usually takes this form: “I know you don’t believe in ADHD; but do you believe in autism?” To be clear, it would be absurd of me to deny that there are children – plenty of them, relatively speaking – who frequently exhibit behaviors associated with the bogus diagnosis of ADHD (attention deficit-hyperactivity disorder). Those kids are problematic, for sure. But no one has ever proven that they “have” something. Childhood behavior disorders...