are likely to indicate a gross disturbance of brain functioning such as delirium, dementia or intoxication. Specific language abnormalities may be associated with pathology in Wernicke's area or Broca's area of the brain. In Korsakoff's syndrome there is dramatic memory impairment with relative preservation of other cognitive functions. Visuospatial or constructional abnormalities here may be associated with parietal lobe pathology, and abnormalities in executive functioning tests may indicate frontal lobe pathology. This kind of brief cognitive testing is regarded as a screening process only, and any abnormalities are more carefully assessed using formal neuropsychological testing. The MSE may include a brief neuropsychiatric examination in some situations. Frontal lobe pathology is suggested if the person cannot repetitively execute a motor sequence (e.g. "paper-scissors-rock"). The posterior columns are assessed by the person's ability to feel the vibrations of a tuning fork on the wrists and ankles. The parietal lobe can be assessed by the person's ability to identify objects by touch alone and with eyes closed. A cerebellar disorder may be present if the person cannot stand with arms extended, feet touching and eyes closed without swaying (Romberg's sign); if there is a tremor when the person reaches for an object; or if he or she is unable to touch a fixed point, close the eyes and touch the same point again. Pathology in the basal ganglia may be indicated by rigidity and resistance to movement of the limbs, and by the presence of characteristic involuntary movements. A lesion in the posterior fossa can be detected by asking the patient to roll his or her eyes upwards (Parinaud's syndrome). Focal neurological signs such as these might reflect the effects of some prescribed psychiatric medications, chronic drug or alcohol use, head injuries, tumors or other brain disorders. Insight The person's understanding of his or her mental illness is evaluated by exploring his or her explanatory account of the problem, and understanding of the treatment options. In this context, insight can be said to have three components: recognition that one has a mental illness, compliance with treatment, and the ability to re-label unusual mental events (such as delusions and hallucinations) as pathological. As insight is on a continuum, the clinician should not describe it as simply present or absent, but should report the patient's explanatory account descriptively. Impaired insight is characteristic of psychosis and dementia, and is an important consideration in treatment planning and