ADHD is 50 times more likely to be diagnosed in the United States than in Britain or France. This is because:

A) in the United States, ADHD is viewed as a medical condition, whereas in Britain and France it is viewed as a conduct problem.
B) in the United States, it has been proven that a neurological or biochemical deficit exists, so it is easier to diagnose.
C) teachers are better equipped in Britain and France to implement intervention to assist students with ADHD.
D) more students in Britain and France are diagnosed with oppositional-defiant disorder.

The difference in ADHD diagnosis rates between the United States and countries like Britain and France is largely due to differing perspectives on the condition. In the United States, ADHD is more commonly viewed through a medical model as a disorder that can be diagnosed and treated, often with medication. In contrast, Britain and France tend to approach ADHD more as a behavioral issue, focusing on conduct and potentially employing different strategies for management that do not necessarily involve medical diagnosis or treatment. This fundamental difference in approach contributes to the significantly higher diagnosis rates in the United States.