How can we determine the status of brain function

Neuropsychological assessment is the clinical practise of using tests and other behavioural evaluation instruments to determine the status of brain function. It is based on the assumption that the brain is the organ of behaviour, and so the status of the brain can be evaluated through the use of behavioural measures. Over many years of research, particular procedures have been found to have particular sensitivities to alteration on brain function, and these procedures have come to be known as psychological tests.