“People may say things will change, but then things go back to the way they were before,” Sternberg said. Just like when he was a boy, teachers are still too quick to judge a child’s potential based on narrow, abstract tests—a fact he has witnessed in the education of his own children, one of whom is now a successful Silicon Valley entrepreneur. “I have five kids and all of them at one time or another have been diagnosed as potential losers,” he said, “and they’ve done fine.”