["To investigate the influence of the diagnostic terms 'concussion' and 'mild traumatic brain injury' (mTBI) on contact-sport players' injury perceptions and expected symptoms from a sport-related mTBI. It was hypothesized that contact-sport players would hold more negative injury perceptions and expect greater symptom disturbance from a sport-related injury that was diagnosed as an 'mTBI' compared to 'concussion' or an undiagnosed injury.", 'One hundred and twenty-two contact-sport players were randomly allocated to one of three conditions in which they read a sport-related mTBI vignette that varied only according to whether the person depicted in the vignette was diagnosed with concussion (n\u2009=\u200940), mTBI (n\u2009=\u200941) or received no diagnosis (control condition; n\u2009=\u200941). After reading the vignette, participants rated their injury perceptions (perceived undesirability, chronicity and consequences) and expectations of post-concussion syndrome (PCS) and post-traumatic stress disorder (PTSD) symptoms 6 months post-injury.', "There were no significant differences in contact-sport players' injury perceptions or symptom expectations from a sport-related mTBI when it was diagnosed as an mTBI, concussion or when no diagnosis was given."] Is diagnostic terminology associated with contact-sport players ' expectations of outcome from mild traumatic brain injury?