Chimerism is what happens when cells from one twin are present in the other. For example, white blood cells with Y chromosomes would be found in the female twin.
: of, relating to, or involving conscious mental activities (such as thinking, understanding, learning, and remembering). cognitive development/psychology/impairment. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples.
Best Answer: The DSM IV does not list 'cognitive stress' as a specific disorder, but disorders like Delirium, Dementia, etc. are listed under cognitive disorders. Cognitive stress would really just mean a strain in cognitive function, or in processing certain information/ messages sent to the brain.