Time Out Chicago: Treatments for autism—diets, drugs—have been in the news a lot of late. What do you make of them?

Temple Grandin: With the little kids, the two-, three- or four-year-olds, I’d strongly recommend trying the diets, like the wheat free, the dairy free and also a thing called the specific carbohydrate [diet] where you cut out a ton of sugar and white carbs like rice and potatoes. Those diets don’t help everybody, but there’s a subgroup that they help...