Yips are involuntary wrist spasms that occur most commonly when golfers are trying to putt. However, the yips can also affect people who play other sports - such as cricket, darts and baseball.
It was once thought that the yips were always associated with performance anxiety. However, it now appears that some people have yips that are caused by a focal dystonia, which is a neurological dysfunction affecting specific muscles.
Charles H. Adler, M.D., neurologist at Mayo Clinic in Arizona, discusses study findings related to the yips, a condition affecting a significant number of already anxious golfers during putting or chipping.
Yips. Mayo Clinic.