This document discusses how brain injuries can affect thinking and behavior. Part I explains that brain injuries can compromise brain function by destroying or displacing tissue, increasing pressure, or causing seizures. Part II outlines possible cognitive and behavioral changes such as issues with sensation, perception, language, attention, memory, executive functions, personality, and emotions. Part III provides strategies to address these changes, including remedial techniques to remedy problems and compensatory strategies to work around issues. It suggests approaches for specific areas as well as general tips like accepting limitations and adapting to change.