What is cognition?
Cognition is the act of knowing or thinking. It includes the ability to choose, understand, remember and use information. Cognition includes:
Attention and concentration. 
Processing and understanding information. 
Memory. 
Communication. 
Planning, organizing, and assembling. 
Reasoning, problem-solving, decision-making, and judgment. 
Controlling impulses and desires and being patient. 
How does TBI affect cognition and what can be done about it?
After a TBI it is common for people to have problems with attention, concentration, speech and language, learning and memory, reasoning, planning and problem-solving.
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