A surprising new look at the rise of ADHD in America, arguing for a better paradigm for diagnosing and treating our children In 1987, only 3 percent of American children were diagnosed with attention-deficit/hyperactivity disorder, also known as ADHD. By 2000, that number jumped to 7 percent, and in 2014 the number rose to an alarming 11 percent. To combat the disorder, two thirds of these children, some as young as three years old, are prescribed powerful stimulant drugs like Ritalin and Adderall to help them cope with symptoms. Meanwhile, ADHD rates have remained relatively low in other countries such as France, Finland, and the United Kingdom, and Japan, where the number of children diagnosed with and medicated for ADHD is a measly 1 percent or less.