Many softball players suffer pitching and throwing yips. However, the facts regarding this problem have remained unknown. We attempted to develop a questionnaire to assess the risk of yips based on its causes, situations, and symptoms. A mixed method study was conducted for the above purposes. In Study 1, female university softball players (N = 97) suffering yips responded to an open-ended questionnaire on causes, situations, and symptoms of yips. These three aspects were

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