Cognitive testing can be an effective tool for diagnosing a concussion, but it also has its limits. While these tests can help identify cognitive impairments, they may not be able to detect all the symptoms of a concussion, such as changes in mood or sleep patterns. Additionally, some people may perform well on cognitive tests despite having a concussion, making it difficult to accurately diagnose their condition. Therefore, doctors should use a combination of cognitive testing and other diagnostic tools to ensure the most accurate diagnosis and treatment plan for patients with concussions.