A neuropsychologist is a professional who studies the relationship between the brain and behavior. They assess and treat individuals with brain injuries, neurological disorders, or cognitive impairments. By using various tests, they evaluate memory, attention, and problem-solving skills to understand how brain function affects daily life. In their work, neuropsychologists often collaborate with other healthcare providers, such as neurologists and psychiatrists, to create comprehensive treatment plans. They may also conduct research to advance knowledge about brain function and improve therapeutic techniques, contributing to fields like cognitive psychology and rehabilitation.