“The yips,” he said, “can be explained in both psychological and neuromuscular terms, and it’s extremely complicated. It’s very difficult to treat and very difficult to understand.… What it boils down to, a mistake is made, ultimate trust is eroded, pressure interferes with the lack of trust, and that compounds the problem. Now there’s anxiety, and a vicious cycle ensues.” Along come the obsessive thoughts, Dr. Oakley said, the failure, the pursuit of perfection now fouled by anxiety and more failure and more anxiety.

